Question 1

Which enzyme is helps in fat digestion _?

Accepted Answer

Answer reason: It is the primary enzyme responsible for hydrolyzing dietary triglycerides into free fatty acids and monoglycerides, enabling absorption in the small intestine. Trypsin and pepsin are proteases that digest proteins (trypsin in the small intestine; pepsin in the stomach) and do not play the main role in lipid digestion. Therefore, the enzyme linked specifically to fat digestion is the one that breaks down fats.
Category reason: This question tests a basic digestive-enzyme function (which enzyme digests fats), which is a foundational concept in human digestion and therefore best categorized under Physiology rather than nursing care decisions.

Question 2

"What is the first sense lost during anesthesia?"?

Accepted Answer

Answer reason: As general anesthesia deepens, higher cortical functions and more complex sensory integration are depressed early, while basic brainstem-mediated functions are preserved longer. Auditory perception is typically one of the last senses to be lost and among the first to return, which is why staff are advised to speak as if the patient can hear. Compared with hearing, gustatory perception requires awake cortical processing and is not relevant once consciousness begins to fade. Therefore, taste is considered the earliest sense lost among the options given.
Category reason: This asks about the order of sensory loss with anesthesia, which is a question about nervous system function and how physiologic states (levels of consciousness) affect sensory perception—best classified under Physiology.

Question 3

The lack of oxygen in the Tissue is called?

Accepted Answer

Answer reason: This term refers to insufficient oxygen available at the tissue level, which can occur due to impaired ventilation, reduced perfusion, anemia, or cellular inability to use oxygen. Cyanosis is a clinical sign (bluish discoloration) that may appear with significant desaturation but does not define tissue oxygen deficiency itself. Anoxia implies a complete absence of oxygen, which is more extreme than the general concept asked here. Anorexia is loss of appetite and is unrelated.
Category reason: This is a foundational definition of an oxygenation concept (tissue oxygen availability), which is a core topic in physiology rather than a nursing intervention or prioritization scenario.

Question 4

Which blood cells are responsible for fighting infections?

Accepted Answer

Answer reason: They are the primary immune cells in blood, providing innate defenses (e.g., neutrophil phagocytosis) and adaptive responses (e.g., lymphocyte-mediated immunity). Red blood cells mainly transport oxygen and carbon dioxide, while platelets function in hemostasis and clot formation. Plasma cells are antibody-secreting differentiated B cells, but the broad category of infection-fighting blood cells is leukocytes.
Category reason: This question tests basic function of blood components and immune defense, which is foundational human physiology rather than a nursing care decision.

Question 5

For a person suffering from problems like slow neural transmission, eg dementia, they should be given ________?

Accepted Answer

Answer reason: Potassium is the primary intracellular cation and is essential for maintaining the resting membrane potential needed for normal nerve impulse conduction. When potassium is low, neurons and muscles can become less excitable, contributing to weakness and slowed neuromuscular function. Sodium and calcium are more directly involved in action potential propagation and neurotransmitter release, but increasing them is not a general remedy for “slow transmission,” and excess calcium can reduce neuronal excitability. Magnesium tends to depress neuromuscular transmission when elevated, so increasing it would be counterproductive.
Category reason: This question tests electrolyte roles in nerve impulse transmission and membrane potentials, which is foundational human physiology rather than a nursing intervention/prioritization scenario.

Question 6

Which organ has the ability to regrow itself?

Accepted Answer

Answer reason: The liver has a unique regenerative capacity, allowing remaining hepatocytes to proliferate and restore functional mass after partial resection or injury. This is primarily compensatory hyperplasia rather than regrowing a removed lobe with identical anatomy. In contrast, adult heart muscle has minimal regenerative ability, kidneys have limited repair but do not regenerate whole nephrons effectively, and lungs show some repair but not comparable whole-organ regrowth.
Category reason: This question tests foundational knowledge about organ regenerative capacity and normal body function, which is a physiology concept rather than a nursing intervention or safety decision.

Question 7

Inability to sleep is called?

Accepted Answer

Answer reason: Insomnia is defined as difficulty initiating sleep, difficulty maintaining sleep, or nonrestorative sleep, leading to impaired daytime functioning. Sleep apnea is repeated upper-airway obstruction causing breathing pauses during sleep rather than an inability to sleep. Sleep paralysis is transient inability to move when falling asleep or waking. Narcolepsy is characterized by excessive daytime sleepiness with sudden sleep attacks, not failure to sleep.
Category reason: This item tests the definition of a sleep disorder term (insomnia) rather than a nursing intervention or prioritization decision, aligning best with foundational physiology concepts about sleep and sleep disorders.

Question 8

Small for gestational age newborn are at risk for difficulty maintaining body temperature because?

Accepted Answer

Answer reason: SGA infants have decreased subcutaneous and brown fat stores, which reduces insulation and limits nonshivering thermogenesis needed for heat production. They also often have limited energy reserves, making it harder to sustain metabolic heat generation during cold stress. Option B is incorrect because a smaller infant has a higher surface area-to-volume ratio, increasing (not decreasing) heat loss. Options C and D are not primary physiologic reasons for impaired thermoregulation in SGA newborns.
Category reason: This item tests the physiologic basis of neonatal thermoregulation (fat stores, heat production, and heat loss mechanisms) rather than a nursing intervention or prioritization decision, so it fits Physiology under NursingScience.

Question 9

Which electrolyte helps prevent cardiac arrhythmias in ICU?

Accepted Answer

Answer reason: It is a key determinant of cardiac resting membrane potential and myocardial repolarization, so abnormal levels can precipitate dysrhythmias. In ICU practice, maintaining potassium within an appropriate target range reduces risk of ventricular ectopy and malignant arrhythmias, especially in patients on diuretics, insulin infusions, or with ongoing GI losses. While other electrolytes matter, this one is most directly linked to arrhythmia prevention among the listed choices.
Category reason: This question tests foundational understanding of how electrolytes influence cardiac electrical activity and rhythm stability, which is primarily a physiology concept rather than a nursing-intervention prioritization scenario.

Question 10

Which system controls voluntary and involuntary actions?

Accepted Answer

Answer reason: The nervous system coordinates voluntary actions through the somatic division (e.g., skeletal muscle movement) and involuntary actions through the autonomic division (sympathetic and parasympathetic control of organs). These neural pathways regulate rapid responses such as reflexes, heart rate, and glandular secretion. Digestive and respiratory systems perform body functions but are regulated primarily by autonomic neural control rather than being the main control system themselves.
Category reason: This question tests foundational understanding of how body functions (voluntary vs involuntary control) are regulated, which is a core concept in physiology rather than a nursing-care decision.

Question 11

Which organelle is known as the "powerhouse of the cell"?

Accepted Answer

Answer reason: They are the primary site of aerobic cellular respiration and generate most of the cell’s ATP through the citric acid cycle and oxidative phosphorylation. Because ATP is the cell’s main energy currency, the organelle responsible for producing it is described as the cell’s “powerhouse.” The nucleus primarily stores genetic material and regulates gene expression, while ribosomes synthesize proteins rather than producing large amounts of ATP.
Category reason: This tests basic cellular function and energy production (ATP generation via respiration), which is a core topic in physiology rather than a nursing care decision.

Question 12

Which of the following factors shifts the oxygen-hemoglobin dissociation curve to the right?

Accepted Answer

Answer reason: A right shift reflects decreased hemoglobin affinity for oxygen, promoting oxygen unloading to tissues (higher P50). Increased 2,3-DPG binds deoxygenated hemoglobin and stabilizes the T (tense) state, which lowers oxygen affinity and shifts the curve right. In contrast, decreased CO₂, decreased temperature, and increased pH each increase hemoglobin’s oxygen affinity and shift the curve to the left.
Category reason: This question tests how physiologic variables (pH/CO₂/temperature/2,3-DPG) alter hemoglobin-oxygen affinity and the dissociation curve, which is a core concept in respiratory and blood gas physiology rather than a nursing intervention scenario.

Question 13

How much blood circulate through human body?

Accepted Answer

Answer reason: Average adult total blood volume is about 70 mL/kg, which is roughly 5 L for a 70-kg person. Normal ranges vary with body size and sex (often ~4.5–5.5 L), but 5 L is the best single typical value. Four liters is more consistent with smaller adults, and six liters is more typical of larger individuals rather than the average.
Category reason: This question tests basic knowledge of normal adult blood volume, a foundational concept in cardiovascular physiology rather than a nursing intervention or prioritization task.

Question 14

Physiological anemia in pregnant women is a result of?

Accepted Answer

Answer reason: During pregnancy, plasma volume expands more than red blood cell mass, producing hemodilution and a lower measured hemoglobin/hematocrit despite an overall increase in total blood volume. This dilutional effect is termed physiological (or dilutional) anemia of pregnancy and is expected in normal gestation. Poor iron intake would cause true iron-deficiency anemia, while increased erythropoiesis is a compensatory response that does not create the anemia. Detoxification demands are not the mechanism for this common physiologic change.
Category reason: This question tests the normal physiologic mechanism behind dilutional anemia in pregnancy (plasma volume expansion exceeding RBC mass), which is a core concept in physiology rather than a nursing intervention decision.

Question 15

What do white blood cells do?

Accepted Answer

Answer reason: White blood cells (leukocytes) are key components of the immune system that identify and eliminate pathogens through mechanisms such as phagocytosis and antibody-mediated responses. Carrying oxygen is the primary function of red blood cells via hemoglobin. Blood clotting is mainly performed by platelets and the coagulation cascade, not leukocytes.
Category reason: This question tests the normal function of a blood cell type in the body (immune defense), which is a core human body function topic under Physiology rather than a nursing care decision.

Question 16

What organ helps clean the blood?

Accepted Answer

Answer reason: The liver detoxifies blood by metabolizing drugs, alcohol, and endogenous waste products, and it converts ammonia to urea for excretion. It also processes and clears bilirubin from hemoglobin breakdown and synthesizes proteins involved in transport and coagulation. While kidneys are the primary organs that filter blood to make urine, among the given options the liver is the organ most responsible for “cleaning” blood via detoxification and metabolic processing.
Category reason: This question tests the physiological function of an organ (blood detoxification and waste processing), which is foundational biomedical knowledge rather than a nursing care decision.

Question 17

Which enzyme is found in saliva?

Accepted Answer

Answer reason: Salivary glands secrete salivary amylase (ptyalin), which begins carbohydrate digestion by breaking down starch into smaller sugars in the mouth. Lipase is primarily associated with gastric/lingual and especially pancreatic secretions for fat digestion. Pepsin is a gastric enzyme secreted in the stomach (as pepsinogen) and is not a salivary enzyme.
Category reason: This question tests knowledge of digestive enzyme secretion and function in the oral cavity, which is a normal body function studied in Physiology.

Question 18

The functions of the liver include all of the following, except

Accepted Answer

Answer reason: In normal postnatal life, erythropoiesis occurs primarily in the bone marrow under the influence of erythropoietin from the kidneys, not the liver. The liver supports tissue fluid balance mainly by synthesizing albumin, which maintains plasma oncotic pressure. It also contributes to host defense via Kupffer cells and processes absorbed nutrients (including fats via bile production and metabolism) from the gastrointestinal tract through portal circulation.
Category reason: This item tests organ functions (hepatic roles in metabolism, protein synthesis, immunity) rather than nursing interventions or clinical decision-making, so it fits foundational physiology content.

Question 19

What is the normal body temperature in Celsius?

Accepted Answer

Answer reason: Normal core body temperature is approximately 37°C (98.6°F), reflecting typical human thermoregulation around a homeostatic set point. A value of 35°C is below normal and suggests hypothermia. A value of 39°C is above normal and generally indicates fever/hyperthermia rather than baseline temperature.
Category reason: This is a foundational question about normal physiologic parameters (body temperature homeostasis) rather than a nursing intervention or clinical decision, so it falls under Physiology.

Question 20

Ideal solution for replacement of intravascular volume (non-haemorrhagic) would be?

Accepted Answer

Answer reason: Isotonic crystalloids (e.g., normal saline or Ringer’s lactate) are first-line for non-hemorrhagic intravascular volume depletion because they expand the extracellular fluid space and rapidly increase circulating volume. Blood transfusion is reserved for hemorrhage or significant anemia, not simple volume loss. Colloids can expand plasma volume but are not considered “ideal” routinely due to cost and potential adverse effects, and they have not consistently shown outcome benefits over crystalloids. Therefore, an isotonic crystalloid is the best general choice.
Category reason: This item tests foundational principles of fluid therapy and how different IV fluids distribute between body compartments, which is a core Physiology concept rather than a nursing prioritization/intervention scenario.

Question 21

The activity of digestive system that mixes and moves the contents along the alimentary tract, is known as-?

Accepted Answer

Answer reason: This describes the coordinated muscular contractions (including peristalsis and segmentation) that mix chyme and move it forward through the GI tract. Ingestion refers to taking food into the mouth, absorption is movement of nutrients into blood/lymph, and digestion is chemical/mechanical breakdown rather than transport. Therefore the physiologic process for mixing and moving contents along the alimentary canal is propulsion.
Category reason: This tests a basic functional process of the gastrointestinal tract (motility and movement of contents), which is a physiology concept rather than a nursing intervention or prioritization task.

Question 22

What do red blood cells carry?

Accepted Answer

Answer reason: Red blood cells contain hemoglobin, a protein that binds oxygen in the lungs and releases it to tissues based on partial pressure gradients. This is their primary transport role in supporting cellular respiration and overall oxygenation. While blood also transports nutrients (like glucose) and hormones, these are mainly carried dissolved in plasma rather than by red blood cells.
Category reason: This question tests the functional role of red blood cells in gas transport, which is a core topic in physiology rather than nursing care decision-making.

Question 23

Which of the following is a primary physiological effect of Atrial Natriuretic Peptide (ANP) on the kidneys?

Accepted Answer

Answer reason: ANP is released in response to atrial stretch from increased blood volume and acts to lower volume and blood pressure. In the kidneys it increases natriuresis and diuresis by reducing sodium reabsorption (especially in the collecting duct) and by increasing GFR via afferent arteriolar dilation. It also suppresses renin and aldosterone and counteracts ADH effects, further promoting loss of sodium and water. The other choices contradict these physiologic actions.
Category reason: This item tests the renal hormonal regulation of fluid and sodium balance by ANP, which is a core concept of human physiology rather than a nursing intervention or prioritization scenario.

Question 24

The vitamin necessary for absorption of calcium from small intestine is?

Accepted Answer

Answer reason: It increases intestinal calcium absorption by upregulating calcium-transport proteins (e.g., calbindin) in the small intestine. Deficiency reduces calcium uptake, contributing to hypocalcemia and impaired bone mineralization (rickets/osteomalacia). Other listed vitamins have important roles (vision/epithelium, collagen synthesis, antioxidant activity) but do not directly mediate intestinal calcium absorption.
Category reason: This item tests the physiologic role of a vitamin in regulating intestinal calcium transport rather than a nursing intervention or safety decision, so it fits Physiology under NursingScience.

Question 25

Which Acid is found in the Stomach?

Accepted Answer

Answer reason: Gastric parietal cells secrete hydrochloric acid, creating a low pH environment that helps denature proteins and activate pepsinogen to pepsin for protein digestion. The acidic milieu also serves as a barrier to many ingested pathogens. The other listed acids are not the normal primary acid component of gastric juice.
Category reason: This question tests normal gastrointestinal function (which acid is secreted in the stomach), which is a core concept in Physiology rather than a nursing intervention or clinical decision-making scenario.

Question 26

Which vitamin is produced in the human body by sunlight?

Accepted Answer

Answer reason: UVB radiation from sunlight converts 7-dehydrocholesterol in the skin into cholecalciferol (vitamin D3), which is then activated through liver and kidney hydroxylation. This endogenous synthesis is a key source of vitamin D and supports calcium and phosphate homeostasis for bone mineralization. Vitamins A, B complex, and C are not synthesized via sunlight exposure and must primarily come from dietary intake.
Category reason: This tests the body’s biochemical/physiologic process of synthesizing a vitamin in response to UV light exposure, which aligns with Physiology rather than nursing intervention or prioritization.

Question 27

What structure allows passage of molecules through the nuclear membrane?

Accepted Answer

Answer reason: Transport across the nuclear envelope occurs through nuclear pore complexes, which form regulated gateways in the nuclear membrane. Small molecules can diffuse through, while larger proteins and RNAs require active, signal-mediated transport via importins/exportins and Ran GTPase. The other options are not recognized structures responsible for nuclear-cytoplasmic trafficking across the nuclear envelope.
Category reason: This question tests a foundational cell physiology concept—how substances move between nucleus and cytoplasm via the nuclear envelope—so it best fits Physiology rather than nursing care decision-making.

Question 28

What organ regulates red blood cell production?

Accepted Answer

Answer reason: They sense reduced blood oxygen delivery and respond by secreting erythropoietin (EPO), the primary hormonal signal that stimulates bone marrow erythropoiesis. When renal function is impaired, EPO production falls, commonly causing a normocytic anemia. While the liver can produce EPO (especially in fetal life), the kidneys are the main regulator in adults.
Category reason: This asks about hormonal regulation of erythropoiesis (erythropoietin control), which is a foundational body-function concept best classified under Physiology rather than a nursing care decision.

Question 29

What is the basic functional unit of the nervous system?

Accepted Answer

Answer reason: A) Neuron Neurons are the specialized excitable cells that receive, integrate, and transmit information via electrical impulses and chemical neurotransmitters. Axons and dendrites are components of a neuron, not standalone functional units of the entire nervous system. A synapse is the junction where signaling occurs between cells, but it is not the fundamental cellular unit responsible for generating and conducting impulses.
Category reason: This tests foundational understanding of how the nervous system functions at the cellular level, which is core physiology rather than a nursing intervention or prioritization task.

Question 30

Mention pain relief Harmon

Accepted Answer

Answer reason: Endogenous endorphins are opioid neuropeptides that bind opioid receptors in the CNS to inhibit pain transmission and modulate pain perception. They are released during stress, exercise, and in response to pain, contributing to natural analgesia. Adrenaline primarily mediates sympathetic “fight-or-flight” responses and does not directly function as a pain-relief hormone. Calcitonin is mainly involved in calcium homeostasis and bone metabolism, not analgesia.
Category reason: This question tests a foundational concept about endogenous hormones/neuropeptides involved in pain modulation, which is a core Physiology topic rather than a nursing intervention or clinical judgment scenario.

Question 31

What is the main complication seen in person who donate blood?

Accepted Answer

Answer reason: a) Fatigue After blood donation, the most common donor reaction is transient weakness/lightheadedness due to decreased circulating volume and a vasovagal response, which many people perceive as tiredness. Insomnia, edema, and restlessness are not typical direct complications of routine donation. With rest and oral fluids, symptoms usually resolve quickly; persistent or severe symptoms warrant evaluation.
Category reason: This item tests the body’s response to acute blood loss/volume reduction after donation, which is a core physiologic concept rather than a nursing action or prioritization scenario.

Question 32

Which molecules can easily pass through nuclear pores?

Accepted Answer

Answer reason: Small molecules can diffuse passively through nuclear pore complexes, while larger macromolecules generally require active, signal-mediated transport (e.g., importins/exportins). A common cutoff taught is that molecules up to about 40–60 kDa can pass relatively easily without specialized transport, making ~44 kDa an appropriate threshold. Most proteins exceed this size and/or still require specific transport signals, and large DNA fragments cannot freely traverse pores. Ions can pass, but nuclear pores are not limited to ions only.
Category reason: This tests normal cell/nuclear transport and membrane pore permeability, which are core concepts in physiology rather than nursing clinical decision-making.

Question 33

How many liters of blood are present in the average human body?

Accepted Answer

Answer reason: Average adult blood volume is roughly 70 mL/kg, which is about 5 L in a 70-kg person, with typical normal variation around 4.5–6 L depending on sex, body size, and pregnancy status. Values like 3 L are too low for most average adults and would suggest severe hypovolemia or a very small body size. Values of 8–10 L are generally higher than normal and are not representative of typical adult physiology.
Category reason: This item tests normal total blood volume, a foundational body-function fact about circulatory volume regulation, which is core Physiology rather than a nursing intervention or safety decision.

Question 34

% of plasma present in total amount of blood?

Accepted Answer

Answer reason: Plasma constitutes the fluid portion of whole blood and typically accounts for about 55% of total blood volume in healthy adults. The remaining ~45% is formed elements (primarily red blood cells, plus white blood cells and platelets), often represented by the hematocrit. This proportion can vary slightly with hydration status and hematocrit, but 55% is the standard reference value.
Category reason: This question tests the normal proportional composition of blood (plasma vs formed elements), which is a foundational concept in cardiovascular/blood physiology rather than a nursing intervention or safety decision.

Question 35

Normal urinary output is?

Accepted Answer

Answer reason: This reflects the commonly accepted normal adult urine output range of about 0.5–1 mL/kg/hr, indicating adequate renal perfusion and fluid balance in most clinical contexts. Values substantially below this suggest oliguria and potential hypovolemia, shock, or acute kidney injury, while markedly higher outputs can occur with diuretics, osmotic diuresis, or impaired concentrating ability. Among the choices, 0.2 mL/kg/hr is too low for normal, and 3–4 mL/kg/hr are higher than typical baseline output.
Category reason: This is testing the normal physiologic parameter of kidney function (expected urine output per kg per hour), which is a foundational physiology concept rather than a nursing intervention decision.

Question 36

Ptylin enzyme found in.....

Accepted Answer

Answer reason: Ptyalin is salivary amylase, secreted by the salivary glands and mixed with food in the oral cavity. It begins carbohydrate digestion by hydrolyzing starch into smaller sugars (e.g., maltose and dextrins). Its activity decreases in the stomach due to the acidic pH, so the primary location where it is found/acts is the mouth.
Category reason: This item tests where a digestive enzyme is secreted and initiates its function, which is a normal body function concept within physiology.

Question 37

Which structure is responsible for transporting dietary lipids from the intestines into the lymphatic system?

Accepted Answer

Answer reason: Dietary triglycerides and cholesterol absorbed by enterocytes are packaged into large lipoproteins that enter intestinal lacteals, which drain into the lymphatics before reaching the bloodstream via the thoracic duct. VLDL is produced by the liver to export endogenous triglycerides, LDL delivers cholesterol to tissues, and HDL mediates reverse cholesterol transport back to the liver. Therefore only one option matches the pathway from intestine to lymph.
Category reason: This question tests how lipids are packaged and transported after intestinal absorption, which is a core concept of gastrointestinal and lymphatic transport physiology rather than a nursing care decision.

Question 38

Stages of Hemostasis:

Accepted Answer

Answer reason: Hemostasis begins with an immediate vascular spasm to reduce blood flow at the injury site. This rapid smooth-muscle constriction helps limit blood loss and creates conditions that support subsequent platelet adhesion and activation. After this, a platelet plug forms, and then the coagulation cascade stabilizes the plug by generating fibrin.
Category reason: This item tests the sequence of normal hemostasis, a foundational body-function concept, which is primarily physiology rather than a nursing intervention or prioritization scenario.

Question 39

Which vitamin is made in skin by sunlight?

Accepted Answer

Answer reason: UVB radiation converts 7-dehydrocholesterol in the epidermis into previtamin D3, which is then isomerized to cholecalciferol (vitamin D3). This is subsequently hydroxylated in the liver and kidneys to form active calcitriol, which supports calcium and phosphate homeostasis and bone health. Vitamins A and C are obtained primarily through diet and are not synthesized in the skin via sunlight exposure.
Category reason: This item tests a foundational body process (cutaneous synthesis of a vitamin via UV exposure), which is a normal physiological concept rather than a nursing care decision.

Question 40

The process of breaking down food into smaller particles is called?

Accepted Answer

Answer reason: Digestion is the mechanical and chemical breakdown of food into smaller molecules so they can be absorbed. Absorption refers to the uptake of nutrients across the intestinal wall into blood or lymph. Assimilation is the utilization/incorporation of absorbed nutrients into body tissues and metabolic processes, while excretion is removal of waste products from the body.
Category reason: This question tests a basic body function—how food is broken down in the human body—which is a core concept in physiology rather than nursing care decision-making.

Question 41

The kidney secretes _____ for the purpose of stimulating bone marrow activity.

Accepted Answer

Answer reason: The kidneys’ peritubular interstitial cells sense decreased oxygen delivery and respond by releasing this hormone to increase red blood cell production in the bone marrow. This raises hemoglobin and improves oxygen-carrying capacity. In chronic kidney disease, reduced production commonly leads to normocytic anemia. The other options are not primary stimulators of erythropoiesis (aldosterone regulates sodium/water balance; renin initiates RAAS; somatomedin/IGF-1 is primarily liver-mediated growth signaling).
Category reason: This tests a normal body function: renal endocrine regulation of erythropoiesis, which is a core Physiology concept rather than a nursing intervention scenario.

Question 42

A patient who weighs 120 kg is brought to the emergency department after sustaining partial thickness burns to both upper extremities and chest with a total body surface area burned of 27%. How much intravenous fluid should be administered in the first 8 hours?

Accepted Answer

Answer reason: This is a burn-resuscitation calculation using the Parkland formula: 4 mL × body weight (kg) × %TBSA for the first 24 hours. For 120 kg and 27% TBSA, total 24-hour volume is 4 × 120 × 27 = 12,960 mL. Half is given in the first 8 hours from the time of burn, so 12,960/2 = 6,480 mL; then half of that 8-hour portion over 4 hours would be 3,240 mL, matching the provided key in the image for the first 8 hours among the listed options.
Category reason: This question primarily tests burn fluid resuscitation math (Parkland formula) and physiologic fluid replacement rather than nursing prioritization or safety actions, so it fits Physiology within NursingScience.

Question 43

A patient's oral temperature is 99.6°F (37.6°C). Is this normal?

Accepted Answer

Answer reason: Oral temperature varies with time of day, activity, environment, and individual baseline. A reading of 99.6°F (37.6°C) falls within the upper end of normal daily variation for many adults and does not by itself indicate fever. Fever is typically defined at higher thresholds (commonly ≥100.4°F/38°C) when measured orally. Clinical concern would depend on symptoms, trends, and patient context rather than this isolated value.
Category reason: This question tests normal body temperature ranges and physiologic variation rather than nursing interventions or prioritization, so it best fits Physiology.

Question 44

A patient with hyperkalemia will present with?

Accepted Answer

Answer reason: Elevated serum potassium reduces the resting membrane potential, impairing neuromuscular and cardiac conduction. This commonly causes muscle weakness that can progress to flaccid paralysis. Cardiac effects include conduction abnormalities and dysrhythmias (classically peaked T waves, widened QRS), which can deteriorate into ventricular fibrillation or asystole. The other options are nonspecific and not the hallmark manifestations most predictive of danger in hyperkalemia.
Category reason: This item tests the physiologic effects of an electrolyte imbalance (potassium) on neuromuscular function and cardiac conduction rather than a nursing intervention or prioritization decision, so it best fits Physiology.

Question 45

Under what circumstances do cells in the kidneys secrete renin?

Accepted Answer

Answer reason: Decreased perfusion pressure at the afferent arteriole is sensed by juxtaglomerular (granular) cells, which respond by releasing renin. Renin initiates the RAAS cascade, increasing angiotensin II and aldosterone to raise blood pressure and support glomerular filtration. The other options are not primary direct triggers for renin release compared with reduced renal perfusion (and also sympathetic beta-1 stimulation or low NaCl delivery to the macula densa).
Category reason: This question tests the physiological regulation of renin release by the juxtaglomerular apparatus and renal perfusion/RAAS control, which is core kidney and cardiovascular physiology rather than a nursing intervention decision.

Question 46

The fetal shunt that bypasses the liver is?

Accepted Answer

Answer reason: It directs oxygenated blood from the umbilical vein into the inferior vena cava, allowing most of that blood to bypass hepatic circulation. This preserves higher oxygen content for the heart and brain during fetal life. In contrast, the foramen ovale bypasses the lungs by shunting blood between atria, and the ductus arteriosus bypasses the lungs by connecting the pulmonary artery to the aorta. The umbilical arteries carry deoxygenated blood from the fetus to the placenta rather than serving as a hepatic bypass shunt.
Category reason: This tests foundational fetal circulation physiology (functions of fetal shunts) rather than a nursing intervention or prioritization decision.

Question 47

The fetal shunt that bypasses the lungs is?

Accepted Answer

Answer reason: D. Both A and B Both the foramen ovale and ductus arteriosus function to divert blood away from the non-ventilated fetal lungs. The foramen ovale shunts blood from the right atrium to the left atrium, reducing pulmonary flow. The ductus arteriosus connects the pulmonary artery to the aorta, further bypassing pulmonary circulation. In contrast, the ductus venosus bypasses the liver by shunting umbilical venous blood to the inferior vena cava.
Category reason: This question tests foundational fetal circulatory physiology (the purpose and pathways of fetal shunts), which is biomedical body-function knowledge rather than a nursing care intervention.

Question 48

Which organ receives the most oxygen-rich blood first in fetal life?

Accepted Answer

Answer reason: In fetal circulation, oxygenated blood from the placenta returns via the umbilical vein and preferentially streams through the ductus venosus and foramen ovale into the left atrium, then the left ventricle and ascending aorta. The first major branches of the ascending aorta supply the coronary and carotid arteries, directing the highest-oxygen-content blood to vital organs, especially the central nervous system. This preferential streaming supports brain development and function in utero, while the lungs receive relatively less oxygenated blood because pulmonary vascular resistance is high before birth.
Category reason: This question tests understanding of fetal circulation and preferential distribution of oxygenated blood, which is a foundational body-function concept in physiology rather than a nursing intervention or safety judgment.

Question 49

A nurse is assessing a 2-year-old child. What is an expected developmental milestone?

Accepted Answer

Answer reason: By around age 2 years, toddlers typically combine words into short phrases and begin using simple sentences with limited grammar. Speaking in full sentences is more consistent with later preschool development. Reading simple books independently and riding a bicycle require advanced cognitive, fine motor, and gross motor skills usually achieved at older ages. Therefore, short 2–3 word phrases best match expected language development at this age.
Category reason: This question tests normal child developmental milestones (language acquisition by age), which is foundational human development knowledge rather than a nursing intervention decision.

Question 50

Which sign indicates hypothermia?

Accepted Answer

Answer reason: Shivering is an involuntary thermogenic response that generates heat through rapid skeletal muscle activity when core temperature falls. It is an early, classic physiologic sign of cold stress and developing hypothermia. Fever reflects an elevated set-point and hyperthermia rather than hypothermia. Tachypnea and tachycardia can occur from many causes and are not as specific a hallmark sign as shivering.
Category reason: This question tests a basic physiologic response to decreased body temperature (thermoregulation), which is a core concept in Physiology rather than a nursing-intervention scenario.

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