Question 1

Q- Larynx is the part of system?

Accepted Answer

Answer reason: The larynx (voice box) is an upper airway structure located between the pharynx and the trachea. It functions in airway protection (epiglottis during swallowing) and in conducting air for respiration, as well as phonation. Therefore, it is classified as part of the respiratory system rather than circulatory, urinary, or digestive systems.
Category reason: This question tests identification of which body system an anatomical structure (larynx) belongs to, which is foundational knowledge of the Respiratory System rather than a nursing care decision.

Question 2

Normal breathing is called?

Accepted Answer

Answer reason: Eupnea refers to normal, quiet, unlabored breathing at a regular rate and depth. Apnea is cessation of breathing, hyperpnea is increased depth (often with increased rate) of breathing, and dyspnea is subjective difficulty or discomfort in breathing. Therefore, the correct term for normal breathing is eupnea.
Category reason: This question tests terminology and basic function related to breathing patterns, which is foundational knowledge in the Respiratory System rather than a nursing intervention or prioritization scenario.

Question 3

The main organ in the human respiratory system is...?

Accepted Answer

Answer reason: The lungs are the primary organs of the respiratory system and are responsible for gas exchange (oxygen uptake and carbon dioxide removal) at the alveoli. The liver is part of the digestive/metabolic system and does not perform ventilation or alveolar gas exchange. Therefore, the best answer is lungs.
Category reason: This question tests foundational knowledge of the primary organ responsible for human respiration and gas exchange, which is core content within the Respiratory System in Nursing Science.

Question 4

Pulmonary function test is...?

Accepted Answer

Answer reason: Pulmonary function tests (PFTs) measure how well the lungs work, including airflow (e.g., FEV1/FVC), lung volumes, and gas exchange/diffusion capacity. They are used to assess and monitor respiratory conditions such as asthma, COPD, and restrictive lung disease. Therefore, the organ system being tested is the lungs, not the kidney, liver, or heart.
Category reason: This item tests foundational knowledge about what pulmonary function tests evaluate, which is primarily the physiology and assessment of the respiratory system rather than nursing interventions or clinical prioritization.

Question 5

Which organ allows the body to exchange oxygen and carbon dioxide?

Accepted Answer

Answer reason: Gas exchange of oxygen and carbon dioxide occurs in the lungs at the alveoli, where diffusion happens across the alveolar-capillary membrane. The heart circulates blood but does not perform gas exchange. The kidneys regulate fluid/electrolytes and acid-base balance but are not the primary site of oxygen and carbon dioxide exchange.
Category reason: The question tests basic organ function related to breathing and gas exchange, which is core content of the Respiratory System in foundational nursing science.

Question 6

Pneumonia is infection of?

Accepted Answer

Answer reason: Pneumonia is an infection/inflammation of the lung parenchyma, primarily affecting the alveoli where gas exchange occurs. The alveoli fill with inflammatory exudate, leading to consolidation and impaired oxygenation. Infection of the bronchi is bronchitis, the trachea is tracheitis, and pleural infection/inflammation is pleuritis/empyema rather than pneumonia.
Category reason: This question tests foundational knowledge of which respiratory structure is infected in pneumonia (alveoli/lung parenchyma), which is core Respiratory System science rather than nursing management or interventions.

Question 7

The main function of the lungs is the process of_____ called respiration [or breathing].?

Accepted Answer

Answer reason: The lungs’ primary function in respiration is gas exchange: oxygen diffuses from the alveoli into pulmonary capillary blood and carbon dioxide diffuses from blood into the alveoli to be exhaled. This exchange is driven by partial pressure gradients across the alveolar-capillary membrane. Absorption and digestion are not the main physiologic roles of the lungs, making "Gas exchange" the best answer.
Category reason: This question tests foundational knowledge about the physiologic role of the lungs in respiration, which is a core topic of the Respiratory System.

Question 8

A 2-year-old child presents with fever, cough, and difficulty breathing. Chest X-ray shows bilateral infiltrates. What is the most likely diagnosis?

Accepted Answer

Answer reason: Fever, cough, respiratory distress, and chest X-ray showing bilateral infiltrates most strongly support pneumonia, which characteristically produces infiltrates/consolidation on imaging. Bronchiolitis (often RSV) usually presents with wheezing and hyperinflation/peribronchial thickening rather than classic infiltrates. Asthma typically does not cause fever or infiltrates and chest X-ray is often normal or hyperinflated. Croup is an upper-airway disease with barky cough/stridor and does not cause bilateral lung infiltrates.
Category reason: The question tests recognition of a pediatric respiratory diagnosis based on symptoms and chest X-ray findings, which is primarily foundational clinical knowledge about respiratory diseases rather than nursing interventions or prioritization.

Question 9

First cry of baby helps in....

Accepted Answer

Answer reason: A newborn’s first cry helps establish effective ventilation by inflating and expanding the alveoli, helping clear fetal lung fluid and generate functional residual capacity. This shift lowers pulmonary vascular resistance and supports the transition from fetal to neonatal circulation, but the direct physiologic action of the cry is to aerate the lungs. Therefore, the first cry primarily helps the lungs begin normal air breathing.
Category reason: The item tests foundational physiology of neonatal transition to breathing and lung aeration, which falls under the Respiratory System rather than nursing care decision-making.

Question 10

The most common complication of a lung abscess is?

Accepted Answer

Answer reason: A lung abscess can rupture or extend to the pleural space, leading to pleural infection with pus accumulation, i.e., empyema, which is the most common complication. This occurs due to direct spread of the necrotizing infection from lung parenchyma to the pleura. Pleural effusion may occur but is less specific and often evolves into empyema when infected. Pneumothorax and atelectasis are possible but are not the typical most common complication of lung abscess.
Category reason: The item tests knowledge of disease complications of a pulmonary infection (lung abscess) rather than nursing interventions or prioritization, placing it in foundational Respiratory System science.

Question 11

What is the functional unit of the lungs?

Accepted Answer

Answer reason: Alveoli are the primary sites of gas exchange in the lungs, where oxygen diffuses into pulmonary capillary blood and carbon dioxide diffuses out. Their extremely thin walls and large collective surface area optimize diffusion. Bronchi, bronchioles, and the trachea mainly conduct air and regulate airflow rather than perform gas exchange.
Category reason: This question tests foundational structure-function knowledge of where gas exchange occurs in the respiratory system, which is core Respiratory System science rather than nursing interventions or prioritization.

Question 12

The main organ in the human respiratory system is...?

Accepted Answer

Answer reason: The lungs are the primary organs of the respiratory system responsible for ventilation and gas exchange (oxygen uptake and carbon dioxide elimination) at the alveoli. The liver and kidneys are primarily involved in metabolism/detoxification and filtration/fluid balance, respectively. The heart is central to circulation, transporting blood to and from the lungs, but it is not the main organ of the respiratory system.
Category reason: This item tests foundational knowledge of which organ is primarily responsible for respiration and gas exchange, which is core content in the Respiratory System.

Question 13

Q. The Spirometry test is perform to assess the lung condition?

Accepted Answer

Answer reason: Spirometry is a pulmonary function test that measures lung volumes and airflow (e.g., FEV1, FVC) to evaluate obstructive and restrictive patterns. It is routinely used to diagnose and monitor asthma and COPD by quantifying airflow limitation and bronchodilator responsiveness. It is also used in conditions like cystic fibrosis to track progressive changes in lung function. Therefore, it can assess all listed lung conditions.
Category reason: This item tests foundational knowledge of what spirometry evaluates and which respiratory diseases it is used for, which is primarily biomedical respiratory-system content rather than a nursing intervention/prioritization scenario.

Question 14

Excess collection of air in pleural cavity.........?

Accepted Answer

Answer reason: Excess collection of air in the pleural cavity is termed a pneumothorax. Hemothorax refers to blood in the pleural space, and chylothorax refers to chyle (lymphatic fluid) in the pleural space. “Prothorax” is not the standard medical term for air in the pleural cavity, making pneumothorax the single best answer.
Category reason: The item tests recognition of pleural space pathology terminology (air vs blood vs chyle) within the lungs/pleura, which is foundational biomedical knowledge in the Respiratory System.

Question 15

Most danger or Emergency types of pneumothorax?

Accepted Answer

Answer reason: Tension pneumothorax is the most dangerous/emergent type because air enters the pleural space and cannot escape, creating progressively rising intrathoracic pressure. This pressure collapses the affected lung and can shift the mediastinum, compressing the great vessels and causing obstructive shock with rapid hemodynamic collapse. It requires immediate decompression (e.g., needle decompression followed by chest tube) to prevent death.
Category reason: The question tests foundational understanding of types of pneumothorax and which is most life-threatening, a core concept in respiratory pathophysiology rather than a nursing-intervention scenario.

Question 16

Il s'agit d'une femme âgée de 25 ans, célibataire, sans antécédents médico chirurgicaux, sans ATCDS respiratoires dans la famille. Qui consulte pour une toux sèche depuis 1 an récidivante avec une légère dyspnée lors de la montée des escaliers. La patiente décrit un bruit sifflant parfois durant la nuit. Examen clinique sans particularité. SpO2 98. TA 120/75. Quel est l'élément important manquant?

Accepted Answer

Answer reason: Le tableau (toux sèche chronique, dyspnée d’effort légère, sifflements nocturnes) évoque surtout une pathologie respiratoire type asthme ou irritation bronchique, où l’anamnèse d’exposition tabagique est essentielle (tabagisme actif ou passif). La fumée de tabac est un facteur déclenchant/aggravant majeur des symptômes et oriente la démarche diagnostique et la prise en charge (éviction des irritants, éducation, traitement). Le BMI peut influencer la dyspnée mais n’explique pas spécifiquement les sifflements nocturnes; l’antécédent de néoplasie et la notion de chute ne sont pas des éléments clés immédiats ici.
Category reason: La question vise l’interprétation de symptômes respiratoires chroniques et l’identification d’un facteur d’exposition pertinent (tabac), ce qui relève principalement de l’évaluation des maladies des voies aériennes dans le système respiratoire.

Question 17

Ventilator associated pneumonia is defined as pneumonia that occur ----- hours or after ET intubation.?

Accepted Answer

Answer reason: Ventilator-associated pneumonia (VAP) is classically defined as pneumonia developing at least 48 hours after endotracheal intubation and initiation of mechanical ventilation. This time threshold helps distinguish VAP from pneumonia that was incubating or present prior to intubation. Earlier onset pneumonias are less likely to be attributed to ventilator exposure by definition. Therefore, 48 hours is the best answer.
Category reason: The item tests the standard definitional time threshold for VAP after endotracheal intubation, which is foundational respiratory/infectious disease knowledge rather than a nursing intervention or prioritization scenario.

Question 18

Most common causes of pneumothorax?

Accepted Answer

Answer reason: Trauma is a common overall cause of pneumothorax because blunt or penetrating chest injury can directly introduce air into the pleural space or rupture lung tissue, rapidly collapsing the lung. In clinical practice, traumatic pneumothorax is frequently encountered after accidents and chest procedures, making it a leading cause. While COPD (especially bullous disease) is a common cause of secondary spontaneous pneumothorax, it is not as broadly common as trauma across all pneumothorax types. Rib fracture is typically a mechanism within traumatic injury rather than a separate primary category, and tuberculosis is a less common cause.
Category reason: The question asks about etiologic causes of pneumothorax, which is foundational respiratory pathophysiology rather than a nursing action or prioritization decision.

Question 19

Most common cause of pleural effusion?

Accepted Answer

Answer reason: The most common overall cause of pleural effusion is congestive heart failure, which is reflected in the option "Left ventricular failure." Elevated pulmonary capillary hydrostatic pressure leads to transudation of fluid into the pleural space, typically producing a transudative effusion (often bilateral, or right-sided predominant). Tuberculosis and pneumonia can cause pleural effusions, but these are less common overall and usually produce exudative effusions. COPD itself is not a typical primary cause of pleural effusion.
Category reason: This item tests etiologic knowledge of pleural effusion (a respiratory condition) rather than nursing actions or prioritization, so it fits NursingScience under the Respiratory System.

Question 20

The functional unit of lung is?

Accepted Answer

Answer reason: Alveoli are the primary sites of gas exchange in the lungs, where oxygen diffuses into pulmonary capillaries and carbon dioxide diffuses out. Bronchi and bronchioles mainly serve as conducting airways that move air toward the distal lung units rather than performing most gas exchange. Pleura is a membrane surrounding the lungs and is not involved in the exchange function. Therefore, the alveoli are considered the functional unit of the lung.
Category reason: This question tests foundational knowledge of where gas exchange occurs in the lungs, which is a core concept in respiratory system anatomy and physiology rather than a nursing decision/intervention.

Question 21

Bronchitis is a disease of...?

Accepted Answer

Answer reason: Bronchitis is inflammation of the bronchial tubes, which are airways within the lungs. It primarily affects the respiratory tract and presents with cough and sputum production. Therefore, it is classified as a disease of the lungs rather than the immune system, liver, or skin.
Category reason: The question tests knowledge of which organ system is affected by bronchitis, which is a core topic of the Respiratory System in nursing science.

Question 22

Number of incomplete rings found in trachea are?

Accepted Answer

Answer reason: The human trachea is supported by a series of C-shaped (incomplete posteriorly) hyaline cartilage rings that keep the airway patent. Standard anatomy describes approximately 16–20 tracheal rings in adults. The open posterior portion allows the trachealis muscle and adjacent esophagus to accommodate swallowing and changes in airway diameter. Therefore, 16–20 is the best answer among the options.
Category reason: This item tests foundational anatomy of the airway (the number of tracheal cartilage rings), which is a core concept within the Respiratory System rather than a nursing intervention or clinical judgment question.

Question 23

Which is the most commonly used mode of ventilation in ICU?

Accepted Answer

Answer reason: Assist-control (A/C) ventilation is commonly used in ICUs because it provides full ventilatory support by guaranteeing a minimum respiratory rate and tidal volume/pressure while also assisting any patient-initiated breaths. This makes it suitable for many critically ill patients with respiratory failure or those needing deep sedation. In contrast, CPAP and BiPAP are primarily noninvasive support modes, and SIMV is used less commonly as a primary full-support mode due to potential for increased work of breathing during spontaneous breaths.
Category reason: The question tests knowledge of ventilator modes and their typical clinical use patterns in critical care, which is primarily respiratory support science rather than a nursing judgment/prioritization scenario.

Question 24

The correct flow rate to use with each colour it is shown on mask, along with the percentage of oxygen delivered. Types: BLUE = 2-4L/min = 24% O2 WHITE = 4-6L/min = 28% O2 YELLOW = 8-10L/min = 35% O2 RED = 10-12L/min = 40% O2?

Accepted Answer

Answer reason: This question tests knowledge of Venturi mask color codes and their corresponding FiO2 and oxygen flow settings. The stem states that the YELLOW adapter delivers 35% O2 at a flow rate of 8–10 L/min. Among the options, "35% and 8 liter/min" matches the provided mapping exactly. The other choices either pair the wrong FiO2 with the flow rate or list an FiO2/flow combination not supported by the given chart.
Category reason: The item focuses on oxygen delivery device settings (Venturi mask color-to-FiO2 and flow-rate matching), which is primarily respiratory equipment/oxygen therapy knowledge within the Respiratory System subject area rather than a nursing prioritization or intervention scenario.

Question 25

During inhalation, the ribs.....

Accepted Answer

Answer reason: During inhalation, contraction of the external intercostal muscles elevates the ribs, producing a "pump-handle" and "bucket-handle" motion. This increases the anteroposterior and transverse diameters of the thoracic cavity. The resulting increase in thoracic volume decreases intrathoracic pressure, drawing air into the lungs. Therefore, the ribs move upwards during inspiration.
Category reason: This question tests the mechanics of breathing (rib and thoracic cage movement during inspiration), which is core respiratory physiology rather than a nursing intervention or prioritization scenario.

Question 26

Pneumonia is an infection of...?

Accepted Answer

Answer reason: Pneumonia is an infection/inflammation of the lung parenchyma, primarily involving the alveoli and surrounding tissue. It leads to alveolar filling with fluid/pus, causing symptoms like cough, fever, and shortness of breath. Therefore, the correct body system affected is the lungs, not the kidney, stomach, or blood (blood infection would be bacteremia/sepsis).
Category reason: The question tests foundational knowledge of what organ system pneumonia affects, which is core content in the Respiratory System within NursingScience rather than a nursing intervention or prioritization scenario.

Question 27

What is the function of alveoli?

Accepted Answer

Answer reason: Alveoli are the tiny air sacs in the lungs where diffusion of oxygen into pulmonary capillary blood and carbon dioxide out of the blood occurs across the alveolar-capillary membrane. Their thin walls and large surface area maximize efficient gas exchange. Pumping blood is a cardiac function, and alveoli do not primarily produce enzymes or store oxygen.
Category reason: The question tests the basic function of alveoli in pulmonary ventilation/perfusion and gas exchange, which is core Respiratory System physiology rather than a nursing care decision.

Question 28

A patient presents with pink, frothy sputum and shortness of breath. Which condition does the nurse recognize as the most likely cause?

Accepted Answer

Answer reason: Pink, frothy sputum is a classic finding of pulmonary edema due to fluid (often mixed with a small amount of blood) leaking into the alveoli. This alveolar flooding impairs gas exchange and commonly presents with acute shortness of breath. Chronic bronchitis typically causes a chronic productive cough with thick sputum, tuberculosis more often presents with persistent cough/fever/weight loss and sometimes hemoptysis, and asthma exacerbation usually causes wheezing with thick mucus rather than pink frothy sputum.
Category reason: The question tests recognition of a characteristic respiratory sign (pink, frothy sputum) and linking it to the underlying condition (pulmonary edema), which is foundational respiratory pathophysiology rather than a nursing intervention/prioritization decision.

Question 29

Crackling sounds bilaterally at the bases of lungs is referred as?

Accepted Answer

Answer reason: Crackling sounds, especially heard at the lung bases, are classically described as rales (also called crackles) and are associated with fluid in the alveoli or the sudden opening of collapsed small airways. Rhonchi are lower-pitched, coarse sounds from secretions in larger airways and often clear with coughing. Wheezing is a high-pitched musical sound from narrowed airways, and a pleural rub is a grating sound from inflamed pleural surfaces rather than "crackles.
Category reason: The item tests recognition of lung auscultation findings (types of breath sounds) and their terminology, which is foundational respiratory assessment knowledge within the Respiratory System.

Question 30

Which lung disease is cased by smoking?

Accepted Answer

Answer reason: Cigarette smoking is the leading cause of chronic obstructive pulmonary disease (COPD), including chronic bronchitis and emphysema, through chronic airway inflammation and alveolar destruction. Asthma can be triggered or worsened by smoke exposure but is not primarily caused by smoking. TB is caused by Mycobacterium tuberculosis infection, and pneumonia is usually infectious (or aspiration-related), though smoking increases risk rather than being the primary cause.
Category reason: This question tests foundational disease etiology and risk factors for a respiratory condition rather than nursing interventions or clinical prioritization, so it best fits Respiratory System in NursingScience.

Question 31

Pulmonary embolism is...?

Accepted Answer

Answer reason: A pulmonary embolism is an acute blockage of a pulmonary artery, most often from a thrombus that traveled from a deep vein thrombosis. It can rapidly impair gas exchange and hemodynamics, causing hypoxemia, right heart strain, shock, and sudden death. Because prompt diagnosis and treatment (e.g., anticoagulation and sometimes thrombolysis/embolectomy) are critical to prevent deterioration, it is considered a medical emergency.
Category reason: The item tests understanding of what pulmonary embolism represents as a disease process affecting the lungs and pulmonary circulation, which is foundational respiratory system knowledge rather than a nursing intervention/prioritization scenario.

Question 32

The activity not recorded by pulse oximeter?

Accepted Answer

Answer reason: A pulse oximeter uses photoplethysmography to estimate arterial oxygen saturation (SpO2) and derive pulse rate from pulsatile blood flow. It does not record cardiac electrical activity, which is what an ECG measures. Therefore, changes in ECG waveforms or rhythms are not captured by pulse oximetry. The other options (pulse and SpO2/oxygen saturation) are outputs a pulse oximeter provides.
Category reason: This question tests what physiologic parameters a pulse oximeter measures versus what requires electrocardiography, which is foundational monitoring knowledge primarily tied to oxygenation and cardiopulmonary physiology within the Respiratory System.

Question 33

Revolizer is used in the treatment of which disease?

Accepted Answer

Answer reason: A Revolizer is a dry-powder inhaler device used to deliver inhaled medications (e.g., bronchodilators and inhaled corticosteroids) directly to the airways. Such inhalers are standard therapy for obstructive airway diseases characterized by bronchoconstriction and airway inflammation. Therefore, it is used in asthma and chronic obstructive pulmonary disease (COPD), not in metabolic, cardiovascular, or infectious diseases like diabetes, hypertension, or tuberculosis.
Category reason: The item tests knowledge of an inhalation device and its indication in obstructive airway diseases, which is core content of respiratory disease management rather than nursing process/prioritization.

Question 34

What Is The Name Of The Lung Cancer Caused By Smoking?

Accepted Answer

Answer reason: Smoking is a major risk factor for lung cancer, which is a malignant neoplasm commonly classified as a carcinoma (e.g., small cell or non–small cell lung carcinoma). Asthma and bronchitis are inflammatory airway diseases and are not cancers. Therefore, among the provided options, "Carcinoma" is the only correct cancer term that fits lung cancer related to smoking.
Category reason: The question tests basic biomedical knowledge of smoking-related respiratory disease and cancer terminology rather than nursing interventions or prioritization, so it fits NursingScience under the Respiratory System.

Question 35

Which test is used to diagnose asthma?

Accepted Answer

Answer reason: Spirometry is the primary test used to diagnose asthma by demonstrating variable, reversible airflow obstruction (e.g., reduced FEV1/FVC with significant improvement after a bronchodilator). Chest X-ray is typically used to rule out alternative diagnoses or complications rather than to confirm asthma. Arterial blood gas is mainly for assessing severity during acute exacerbations, not initial diagnosis. Methacholine challenge can support diagnosis when spirometry is normal but symptoms suggest asthma, so it is not the first-line diagnostic test.
Category reason: This question tests knowledge of the standard diagnostic test for a respiratory condition (asthma) and interpretation/selection of pulmonary function testing, which falls under the Respiratory System.

Question 36

The covering of lungs is called_?

Accepted Answer

Answer reason: The lungs are covered by the pleura, a double-layered serous membrane consisting of visceral pleura (adherent to the lung) and parietal pleura (lining the chest wall). The pericardium covers the heart, the peritoneum lines the abdominal cavity and covers abdominal organs, and the meninges cover the brain and spinal cord. Therefore, the correct term for the lung covering is pleura.
Category reason: This question tests foundational knowledge of the serous membrane associated with the lungs, which is a core concept of the Respiratory System anatomy/physiology rather than a nursing care decision.

Question 37

Which of the following reduces surface tension in the alveoli?

Accepted Answer

Answer reason: Pulmonary surfactant, produced by type II alveolar cells, lowers surface tension at the air–liquid interface in alveoli. This prevents alveolar collapse (atelectasis) at end-expiration and improves lung compliance, reducing the work of breathing. Water would increase surface tension, mucus mainly traps particles in airways rather than reducing alveolar surface tension, and hemoglobin functions in oxygen transport within blood.
Category reason: This is a foundational physiology question about alveolar function and the role of surfactant in reducing surface tension, which falls under Respiratory System science rather than nursing interventions or prioritization.

Question 38

Which of the following is an occupational respiratory disorder?

Accepted Answer

Answer reason: Silicosis is a classic occupational lung disease caused by chronic inhalation of crystalline silica dust (e.g., mining, sandblasting, stone cutting). The dust triggers lung inflammation and progressive fibrosis leading to restrictive lung disease and increased risk of TB. Botulism is a neurotoxin-mediated illness, Anthracis refers to Bacillus anthracis infection (not a chronic occupational pneumoconiosis as stated), and emphysema is most commonly related to smoking or alpha-1 antitrypsin deficiency rather than a specific workplace dust exposure.
Category reason: The question tests recognition of a disease caused by workplace inhalational exposure affecting the lungs, which is foundational respiratory-system knowledge rather than a nursing intervention or prioritization scenario.

Question 39

Which zone of the respiratory system is the primary site of gas exchange?

Accepted Answer

Answer reason: Gas exchange primarily occurs in the respiratory zone, which includes the respiratory bronchioles, alveolar ducts, and alveoli. These structures have thin alveolar-capillary membranes and a large surface area, enabling diffusion of oxygen into blood and carbon dioxide out of blood. In contrast, the conducting (including tracheobronchial) zone mainly moves, warms, humidifies, and filters air rather than providing the primary site for diffusion.
Category reason: This question tests foundational knowledge of where gas exchange occurs within lung anatomy/physiology, which is best classified under the Respiratory System rather than nursing intervention or prioritization.

Question 40

Which of the following is the primary purpose of a tracheostomy?

Accepted Answer

Answer reason: A tracheostomy creates a direct opening into the trachea to bypass upper-airway obstruction and provide a secure route for ventilation and oxygen delivery. Its primary purpose is therefore to establish and maintain a patent airway. While certain cuffed tracheostomy tubes may reduce gross aspiration, they do not reliably prevent aspiration. The other options are unrelated to the procedure’s physiologic intent.
Category reason: This question tests the fundamental function of a tracheostomy in maintaining airway patency and ventilation, which is core Respiratory System physiology/anatomy rather than nursing prioritization or care management.

Question 41

The primary function of the lungs is?

Accepted Answer

Answer reason:  Gas exchange The lungs’ primary role is to exchange oxygen and carbon dioxide across the alveolar-capillary membrane, oxygenating blood and removing CO2. Surfactant production is important for alveolar stability but supports (does not replace) the central function of gas exchange. Filtration of blood is primarily a kidney/reticuloendothelial function, and heart rate regulation is mainly controlled by autonomic and cardiac conduction systems.
Category reason: This question tests the core physiologic role of the lungs in respiration (oxygen uptake and carbon dioxide elimination), which belongs to the Respiratory System.

Question 42

Who treats lung and breathing issues?

Accepted Answer

Answer reason:  Pulmonologist A pulmonologist is a physician specialist in diseases of the lungs and respiratory tract, including breathing disorders such as asthma, COPD, pneumonia, and interstitial lung disease. A cardiologist primarily treats heart-related conditions, a dentist treats oral health issues, and an orthopedic specialist treats bones and musculoskeletal problems. Therefore, lung and breathing issues are most appropriately managed by a pulmonologist.
Category reason: This is a foundational question about which medical specialty manages lung and breathing problems, which falls under the Respiratory System rather than nursing interventions or prioritization.

Question 43

Asthma is characterized by?

Accepted Answer

Answer reason:  Bronchoconstriction Asthma is defined by reversible airway obstruction due to bronchial smooth muscle constriction, airway inflammation, and increased mucus production. The resulting narrowed airways cause wheeze, dyspnea, and decreased expiratory flow rates. The other options (vasodilation, hypoglycemia, bradycardia) are not characteristic defining features of asthma pathophysiology.
Category reason: This question tests foundational understanding of asthma pathophysiology and airway mechanics, which is core content of the Respiratory System in Nursing Science rather than a nursing intervention or prioritization scenario.

Question 44

Which organ is most harmed by inhaling dirty air?

Accepted Answer

Answer reason: Lungs Dirty air (particulates, smoke, and pollutants) is inhaled directly into the airways and alveoli, where it causes irritation, inflammation, impaired mucociliary clearance, and oxidative injury. This leads to respiratory diseases such as bronchitis, asthma exacerbations, COPD, and increased risk of lung infections. While air pollution also contributes to cardiovascular disease and can affect other organs systemically, the lungs receive the highest direct exposure and are most directly harmed.
Category reason: This is a foundational question about which body organ is directly affected by inhaled pollutants, focusing on respiratory anatomy/physiology rather than nursing care decisions, so it fits the Respiratory System subject area.

Question 45

CPAP provides?

Accepted Answer

Answer reason: Positive pressure throughout CPAP (continuous positive airway pressure) delivers a constant level of positive pressure during both inspiration and expiration. This helps keep alveoli open, improves functional residual capacity, and reduces atelectasis, thereby improving oxygenation. “Positive pressure in inspiration” describes inspiratory support (more like pressure support ventilation), not CPAP. CPAP does not inherently deliver high tidal volumes, and it is not negative-pressure ventilation.
Category reason: This question tests the core respiratory physiology/mechanics of CPAP and how it applies pressure during the breathing cycle, which is foundational content within the Respiratory System.

Question 46

Breath sound auscultated over the trachea is?

Accepted Answer

Answer reason: Bronchial Bronchial breath sounds are normally heard over the trachea and larynx and are characteristically loud and high-pitched with a longer expiratory phase than inspiratory phase. Vesicular sounds are expected over most peripheral lung fields, and bronchovesicular sounds are typically heard over the major bronchi (1st–2nd intercostal spaces anteriorly and between the scapulae). Crackles are adventitious (abnormal) sounds rather than normal tracheal breath sounds.
Category reason: This question tests normal locations and types of breath sounds on auscultation, which is a foundational respiratory assessment concept within the Respiratory System.

Question 47

Asthma is primarily a disorder of?

Accepted Answer

Answer reason: Respiratory system Asthma is a chronic inflammatory disease of the airways characterized by bronchial hyperresponsiveness, reversible airflow limitation, and mucus production. These processes occur in the bronchial tree/lungs, making it primarily a respiratory system disorder. The other systems listed are not the primary site of pathology in asthma.
Category reason: This item tests foundational knowledge of which organ system is primarily affected by asthma, which is core Respiratory System content rather than a nursing action/priority question.

Question 48

"Blue Bloater" term is commonly used for ?

Accepted Answer

Answer reason: Chronic bronchitis “Blue bloater” refers to a COPD phenotype characterized by chronic bronchitis with chronic hypoxemia and hypercapnia, leading to cyanosis (“blue”). Excess mucus production and airway inflammation contribute to ventilation–perfusion mismatch and can cause peripheral edema (“bloater”) from cor pulmonale. In contrast, emphysema is classically associated with the “pink puffer” phenotype.
Category reason: This is a foundational terminology/clinical association question about COPD phenotypes and their characteristic respiratory pathophysiology, best classified under the Respiratory System.

Question 49

Where does oxygen enter the blood and carbon dioxide leave the blood?

Accepted Answer

Answer reason: Alveoli Gas exchange occurs across the alveolar-capillary membrane, where oxygen diffuses from alveoli into pulmonary capillary blood and carbon dioxide diffuses from blood into the alveoli to be exhaled. The bronchi, trachea, and larynx are conducting airways that primarily move air and do not participate in diffusion-based gas exchange. Alveoli provide a large surface area and thin barrier optimized for diffusion, making them the correct site for oxygen entry and carbon dioxide removal.
Category reason: This question tests the anatomical/physiologic site of pulmonary gas exchange, which is a core concept of the Respiratory System rather than a nursing intervention or prioritization task.

Question 50

Which structure is responsible gas exchange in the lungs?

Accepted Answer

Answer reason: Alveoli Alveoli are the microscopic air sacs where oxygen and carbon dioxide diffuse across the thin alveolar-capillary membrane. They have a very large surface area and are closely surrounded by pulmonary capillaries to maximize gas exchange efficiency. Bronchioles primarily conduct air to the alveoli and do not serve as the main site of diffusion. Nephron (kidney) and neuron (nervous system) are unrelated to pulmonary gas exchange.
Category reason: This question tests where oxygen and carbon dioxide exchange occurs within the lungs, which is a core concept in respiratory structure and function rather than a nursing intervention or prioritization task.

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Q- Larynx is the part of system?

Normal breathing is called?

The main organ in the human respiratory system is...?

Pulmonary function test is...?

Which organ allows the body to exchange oxygen and carbon dioxide?

Pneumonia is infection of?

The main function of the lungs is the process of_____ called respiration [or breathing].?

A 2-year-old child presents with fever, cough, and difficulty breathing. Chest X-ray shows bilateral infiltrates. What is the most likely diagnosis?

First cry of baby helps in....

The most common complication of a lung abscess is?

What is the functional unit of the lungs?

The main organ in the human respiratory system is...?

Q. The Spirometry test is perform to assess the lung condition?

Excess collection of air in pleural cavity.........?

Most danger or Emergency types of pneumothorax?

Ventilator associated pneumonia is defined as pneumonia that occur ----- hours or after ET intubation.?

Most common causes of pneumothorax?

Most common cause of pleural effusion?

The functional unit of lung is?

Bronchitis is a disease of...?

Number of incomplete rings found in trachea are?

Which is the most commonly used mode of ventilation in ICU?

The correct flow rate to use with each colour it is shown on mask, along with the percentage of oxygen delivered. Types: BLUE = 2-4L/min = 24% O2 WHITE = 4-6L/min = 28% O2 YELLOW = 8-10L/min = 35% O2 RED = 10-12L/min = 40% O2?

During inhalation, the ribs.....

Pneumonia is an infection of...?

What is the function of alveoli?

A patient presents with pink, frothy sputum and shortness of breath. Which condition does the nurse recognize as the most likely cause?

Crackling sounds bilaterally at the bases of lungs is referred as?

Which lung disease is cased by smoking?

Pulmonary embolism is...?

The activity not recorded by pulse oximeter?

Revolizer is used in the treatment of which disease?

What Is The Name Of The Lung Cancer Caused By Smoking?

Which test is used to diagnose asthma?

The covering of lungs is called_?

Which of the following reduces surface tension in the alveoli?

Which of the following is an occupational respiratory disorder?

Which zone of the respiratory system is the primary site of gas exchange?

Which of the following is the primary purpose of a tracheostomy?

The primary function of the lungs is?

Who treats lung and breathing issues?

Asthma is characterized by?

Which organ is most harmed by inhaling dirty air?

CPAP provides?

Breath sound auscultated over the trachea is?

Asthma is primarily a disorder of?

"Blue Bloater" term is commonly used for ?

Where does oxygen enter the blood and carbon dioxide leave the blood?

Which structure is responsible gas exchange in the lungs?

Think you’re ready for the NCLEX?

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