Question 1

What is the smallest bone in your body?

Accepted Answer

Answer reason: Stapes The stapes is the smallest bone in the human body and is one of the three auditory ossicles in the middle ear. It transmits sound vibrations from the incus to the oval window of the inner ear. The ulna (forearm) and patella (kneecap) are much larger bones, making them incorrect.
Category reason: This is a foundational question about identification of a specific human bone, which is primarily tested under Anatomy rather than nursing judgment or patient-care decision-making.

Question 2

Which part of the body prevents food from entering the airway during swallowing?

Accepted Answer

Answer reason: Epiglottis The epiglottis is a flap of cartilage that folds down over the laryngeal inlet during swallowing, directing food and liquid into the esophagus. This protective mechanism helps prevent aspiration into the trachea and lower airway. The larynx and trachea are airway structures but do not serve as the primary “lid” during swallowing, and the nasopharynx is part of the upper pharynx behind the nasal cavity.
Category reason: This question tests identification of the anatomical structure that protects the airway during swallowing, which is primarily an Anatomy concept rather than a nursing intervention or clinical judgment task.

Question 3

What is the average weight of the adult human brain?

Accepted Answer

Answer reason: 1.4 kg The average adult human brain weighs about 1.3–1.4 kg (approximately 3 lb). Values like 2.5 kg and 3.5 kg are far above the normal physiologic range for adult brain mass. The 900 g option is closer to pediatric or unusually low adult weights and is below the typical average cited in anatomy references.
Category reason: This is a factual question about the normal mass of an anatomical organ (the brain), which is primarily studied under Anatomy rather than nursing care decision-making.

Question 4

Pouch of douglas is placed between....?

Accepted Answer

Answer reason: Rectum & Uterus The pouch of Douglas (rectouterine pouch) is the peritoneal recess located between the posterior wall of the uterus and the anterior wall of the rectum. It is the most dependent part of the peritoneal cavity in females when upright, so fluid can collect there. The other options describe different anatomic relationships (e.g., vesicouterine pouch between uterus and bladder).
Category reason: This is a question about the anatomical location of a peritoneal pouch in the female pelvis, which is primarily tested under Anatomy.

Question 5

Which of the following is a vestigial organ in humans?

Accepted Answer

Answer reason: Appendix The appendix is commonly taught as a vestigial structure in humans, thought to be a remnant of a larger cecum used for cellulose digestion in ancestral diets. While it may have minor immune-associated functions (lymphoid tissue), it is not essential for survival and can be removed without major long-term physiological deficit. In contrast, the heart, liver, and kidneys are vital organs required for circulation, metabolism/detoxification, and excretion/homeostasis.
Category reason: This question tests identification of a human body structure and its functional significance (vestigial vs vital), which is primarily an Anatomy topic rather than a nursing care decision.

Question 6

Total Number of Milk Teeth..

Accepted Answer

Answer reason: 20 Primary (deciduous) dentition consists of 20 teeth total: 10 in the maxilla and 10 in the mandible. This includes 8 incisors, 4 canines, and 8 molars, with no premolars in the primary set. Counts like 28 and 32 refer to permanent dentition (excluding and including third molars, respectively), so they are not correct for milk teeth.
Category reason: This question tests factual knowledge of human dentition count (primary teeth), which is a structural body fact within Anatomy rather than a nursing intervention or clinical judgment scenario.

Question 7

Question: The brain stem is made up of the midbrain, ______.?

Accepted Answer

Answer reason: D. Pons, and medulla oblongata The brainstem is anatomically composed of three continuous structures: midbrain, pons, and medulla oblongata. These regions contain vital autonomic centers controlling respiration and cardiovascular function and serve as major conduction pathways between the brain and spinal cord. The other options list forebrain structures (cerebrum, cerebral cortex, limbic system) or the cerebellum, which is not part of the brainstem.
Category reason: This item tests identification of the anatomical components of the brainstem, which is core gross neuroanatomy knowledge rather than a nursing intervention or prioritization task.

Question 8

Which organ is the lightest in weight?

Accepted Answer

Answer reason: pancreas Typical adult organ weights place the brain (~1300–1400 g) and lungs combined (~900–1200 g) well above the others listed. The pancreas is usually around ~70–120 g, while the heart is commonly ~250–350 g. Therefore, among these choices, the pancreas has the lowest average weight.
Category reason: This question tests comparative organ weights and basic structural facts about human organs, which is primarily an Anatomy concept rather than a nursing intervention or safety decision.

Question 9

The heart and lungs are protected by......?

Accepted Answer

Answer reason: Ribs and sternum The thoracic cage encloses the thoracic cavity and provides a rigid protective framework for vital organs. The ribs form the lateral and posterior walls while the sternum forms the anterior midline protection, together shielding the heart and lungs from trauma. The skull protects the brain, and the humerus, radius, and ulna are upper-limb bones that do not protect thoracic organs.
Category reason: This is a structural question about which bones protect thoracic organs, which is core human Anatomy.

Question 10

Human brain is protected by?

Accepted Answer

Answer reason: Skull The brain is enclosed within the cranial cavity, and the cranial bones form a rigid protective vault that helps prevent direct mechanical injury. The other listed structures protect different regions: the rib cage protects thoracic organs and the pelvis protects pelvic organs. The spinal cord is part of the central nervous system but does not act as the bony protective structure for the brain.
Category reason: This question tests knowledge of body structures and which skeletal component provides physical protection to the brain, which is an Anatomy concept.

Question 11

Which bone separates the nasal cavity from the brain?

Accepted Answer

Answer reason: Ethmoid The ethmoid bone forms the roof of the nasal cavity via the cribriform plate, which separates the nasal cavity from the anterior cranial fossa where the frontal lobes rest. This thin bony plate transmits olfactory nerve fibers, explaining why trauma here can cause CSF rhinorrhea and anosmia. The sphenoid contributes to the cranial base but does not form the primary partition between the nasal cavity and brain, and the maxilla/zygomatic are facial bones not involved in this separation.
Category reason: This item tests identification of a specific skull bone and its anatomic relationship between the nasal cavity and cranial cavity, which is core Anatomy content rather than nursing judgment or care planning.

Question 12

Nasal bone is a type of?

Accepted Answer

Answer reason: Facial bone The nasal bones are paired bones that form the bridge of the nose and are classified within the viscerocranium (facial skeleton). Long bones are typically limb bones with a shaft and epiphyses, and irregular bones have complex shapes like vertebrae. While some skull bones are flat, the standard anatomical classification of the nasal bone among these choices is as a facial bone.
Category reason: This is a classification question about skeletal structures of the skull, which is an Anatomy topic rather than a nursing care/judgment scenario.

Question 13

Maxilla is part of which bone group?

Accepted Answer

Answer reason: Facial The maxilla forms the upper jaw and contributes to the hard palate, lateral walls of the nasal cavity, and the floor of the orbit. These are components of the facial skeleton (viscerocranium) rather than the cranial bones (neurocranium), which primarily enclose the brain. Therefore, it is categorized among the facial bones.
Category reason: This question tests classification of skull bones into facial versus cranial groups, which is a core Anatomy concept.

Question 14

Which is the largest gland in the human body?

Accepted Answer

Answer reason: Liver The liver is the largest gland in the human body, functioning as a major exocrine gland by producing and secreting bile into the biliary system. It also has extensive endocrine/metabolic roles (e.g., protein synthesis, detoxification, glycogen storage), but its bile secretion is what classically qualifies it as a gland in anatomy questions. The pineal, pituitary, and thyroid are endocrine glands, but they are much smaller in mass and volume than the liver.
Category reason: This is a foundational human body-structure question testing identification of the largest gland, which is primarily an Anatomy concept rather than a nursing care decision.

Question 15

The heart and lungs are protected by?

Accepted Answer

Answer reason: Ribs and Sternum The heart and lungs lie within the thoracic cavity, which is enclosed by the rib cage. The ribs, sternum, costal cartilages, and thoracic vertebrae form a protective bony framework that shields these vital organs from trauma. The skull protects the brain, while the humerus, radius, and ulna are upper-limb bones not involved in thoracic protection.
Category reason: This question tests knowledge of which skeletal structures protect thoracic organs, which is a core concept in Anatomy.

Question 16

Blood vessels, lymphatics and nerves enter the kidney through?

Accepted Answer

Answer reason: The hilum The kidney’s hilum is the medial indentation that serves as the entry/exit point for the renal artery and vein, lymphatics, nerves, and the renal pelvis/ureter. It is the defined anatomical gateway into the renal sinus where these structures course. A single vessel (renal artery) is only one component, and the mediastinum is a thoracic structure unrelated to the kidney.
Category reason: This is a question about the anatomical portal of the kidney and the structures that pass through it, which is primarily tested under Anatomy.

Question 17

ALL ARE VITAL ORGANS EXCEPT (1)?

Accepted Answer

Answer reason: EYES Vital organs are those essential for sustaining life (e.g., brain, heart, and lungs) because they maintain consciousness/control, circulation, and oxygenation. Loss of function of any of these leads rapidly to death without immediate intervention. Eyes are critical for vision and quality of life, but their absence does not directly prevent survival, so they are not classified as vital organs.
Category reason: This item tests identification of which body organs are considered essential for life, a foundational body-structure concept most aligned with Anatomy rather than nursing care decision-making.

Question 18

The patient tells the nurse they are having difficulty bringing their hand to their mouth when eating. The nurse documents patient difficulty with which type of joint movement?

Accepted Answer

Answer reason: Flexion Bringing the hand to the mouth requires bending at joints—primarily elbow flexion (often with accompanying shoulder flexion)—to decrease the angle between the forearm and upper arm and move the hand upward toward the face. Abduction/adduction describe movement away from or toward the body’s midline, which does not primarily describe this action. Extension would straighten the elbow and move the hand away from the mouth rather than toward it.
Category reason: This item tests identification of a joint movement term (flexion vs extension/abduction/adduction), which is a foundational body-structure and movement concept within Anatomy rather than a nursing prioritization or intervention decision.

Question 19

Suicidal bag of cell is…..?

Accepted Answer

Answer reason: They contain hydrolytic enzymes capable of digesting proteins, lipids, nucleic acids, and damaged organelles. If lysosomal membranes rupture or enzymes are released inappropriately, they can cause autolysis and contribute to programmed cell death pathways. This destructive potential is why they are classically termed the “suicidal bags” of the cell. Ribosomes synthesize proteins, vacuoles mainly store substances (especially in plants), and the nucleus regulates genetic functions rather than intracellular digestion.
Category reason: This question tests identification of a cell organelle and its function, which is foundational structure/function content in Anatomy rather than nursing clinical judgment.

Question 20

Which of the following bones is paired in the skull?

Accepted Answer

Answer reason: B) Parietal The parietal bones are present as a left and a right bone forming the superolateral walls and roof of the cranium. In contrast, the mandible, occipital, and frontal bones are single midline bones in the adult skull. Therefore, among the listed choices, only this cranial bone is paired.
Category reason: This is testing identification of skull bones and whether they are paired or unpaired, which is a core topic in gross Anatomy rather than a nursing care decision.

Question 21

Q. which is the outer covering of the brain?

Accepted Answer

Answer reason: The dura mater is the tough, fibrous outermost meningeal layer that lines the inside of the skull and provides major mechanical protection to the brain. The arachnoid mater lies beneath it and encloses the subarachnoid space containing cerebrospinal fluid. The pia mater is the delicate innermost layer adherent to the brain surface. “Thalamic mater” is not a normal meningeal layer.
Category reason: This question tests knowledge of the meninges (dura, arachnoid, pia), which is core gross anatomy rather than a nursing-care decision.

Question 22

Q. Study of shape and form of the body and it's part...?

Accepted Answer

Answer reason: Morphology is the branch of biology concerned with the form and structure (shape) of organisms and their parts. In health sciences, it aligns with studying structural features rather than functions. Physiology focuses on function, endocrinology on hormones/endocrine glands, and biomechanics on forces and movement mechanics.
Category reason: This is a foundational definition about the body’s structure and form, which aligns best with Anatomy as a Nursing Science subject rather than patient-care decision making.

Question 23

During life-threatening subarachnoid hemorrhage, the blood fills the space between:

Accepted Answer

Answer reason: Subarachnoid hemorrhage occurs in the subarachnoid space, which lies between the arachnoid membrane and the pia mater and normally contains cerebrospinal fluid and cerebral vessels. Bleeding here classically results from rupture of an aneurysm or arteriovenous malformation and can rapidly increase intracranial pressure and impair cerebral perfusion. By contrast, blood between skull and dura is epidural, and between dura and arachnoid is subdural.
Category reason: This question tests identification of the meningeal layers and the anatomical spaces between them, which is primarily human anatomy rather than nursing intervention or prioritization.

Question 24

What is the longest and strongest bone in the human body?

Accepted Answer

Answer reason: It is the longest bone and has the greatest load-bearing capacity, transmitting body weight from the hip to the knee during standing and locomotion. Its thick cortical shaft and robust proximal and distal articulations reflect its role in resisting bending and compressive forces. The other listed long bones are substantial but are not both the longest and strongest in humans.
Category reason: This question tests identification of a major skeletal structure (the longest and strongest bone), which is a core topic in human anatomy.

Question 25

Q.1157: The hardest substance in the human body is?

Accepted Answer

Answer reason: It is the most highly mineralized tissue in the body, composed predominantly of hydroxyapatite crystals, which gives it exceptional hardness and resistance to wear. Bone and dentin are also mineralized but contain more organic matrix (notably collagen) and water, making them less hard. Cartilage has even higher water content and much lower mineralization, so it is far softer than tooth tissues.
Category reason: This question tests identification of a normal human structural tissue and its comparative hardness, which is a foundational body-structure fact typically covered under Anatomy.

Question 26

Which of the following is a correct description of the C1 vertebra?

Accepted Answer

Answer reason: C1 is the atlas, the most superior vertebra of the cervical spine. It articulates with the occipital condyles and supports the skull, enabling primarily flexion/extension at the atlanto-occipital joint. The last cervical vertebra is C7 (vertebra prominens), not C1.
Category reason: This tests identification and description of vertebral anatomy (C1 atlas vs C7), which is a foundational structural topic in Anatomy.

Question 27

The length of Esophagus is?

Accepted Answer

Answer reason: In adults, the esophagus typically measures about 25 cm from the pharyngoesophageal junction (around C6) to the gastroesophageal junction (around T11). This standard anatomical length is commonly used for clinical localization during endoscopy and when describing the level of esophageal lesions. The other values are less consistent with accepted normal adult anatomy.
Category reason: This is a factual question about the normal size of a gastrointestinal structure, which is primarily studied in Anatomy rather than requiring nursing care decisions.

Question 28

Which is the largest part of the human brain?

Accepted Answer

Answer reason: It makes up the majority of brain mass and includes the two cerebral hemispheres with extensive cortical surface area. This region is responsible for higher cognitive functions, sensory perception, and voluntary motor control, which correlate with its large size and complex organization. The cerebellum and medulla are smaller structures primarily involved in coordination and autonomic vital functions, respectively.
Category reason: This tests identification of the major gross anatomical division of the brain and which part is largest, which is a core human anatomy concept.

Question 29

Irregular bones are found in the?

Accepted Answer

Answer reason: Vertebrae are classic irregular bones due to their complex shapes with multiple processes and foramina that protect the spinal cord and provide attachment points for muscles and ligaments. In contrast, ribs and most bones of the arms are primarily classified as flat or long bones, respectively. While some skull bones are irregular, the vertebral column is the best single answer because it is predominantly composed of irregular bones.
Category reason: This is a foundational question about classifying bones by shape and identifying where irregular bones are located, which is a core Anatomy topic rather than a nursing care decision.

Question 30

At what age is anterior fontanelle normally closed?

Accepted Answer

Answer reason: The anterior fontanelle typically closes around 12–18 months of age as cranial sutures progressively ossify during normal skull growth. Closure much earlier can suggest craniosynostosis, while delayed closure can be associated with conditions like hypothyroidism, rickets, or increased intracranial pressure. Knowing the expected closure window supports normal pediatric growth assessment and early recognition of abnormalities.
Category reason: This asks about the normal timing of cranial fontanelle closure, a developmental anatomy topic rather than a nursing intervention decision.

Question 31

Which is the only movable bone in the skull?

Accepted Answer

Answer reason: The mandible (lower jaw) is the only skull bone that moves at a synovial joint, the temporomandibular joint (TMJ), enabling chewing and speech. Most other skull bones are joined by immovable sutures. The maxilla, frontal, and temporal bones are fixed relative to the rest of the cranium during normal function.
Category reason: This item tests identification of a skull bone and its mobility, which is a foundational structural concept in human Anatomy rather than a nursing care decision.

Question 32

Which bone forms the forehead?

Accepted Answer

Answer reason: The forehead and the superior margins of the orbits are formed by the frontal bone. It also contributes to the anterior cranial fossa and contains the frontal sinuses. The parietal bones form the superior-lateral skull, the temporal bones form the sides/base near the ears, and the occipital bone forms the posterior skull.
Category reason: This is a structural question about which skull bone forms a specific external region (forehead), which is core content in Anatomy.

Question 33

The femur is the longest bone in the?

Accepted Answer

Answer reason: b) Leg The femur is the thigh bone and extends from the hip to the knee, making it the longest and strongest bone in the human body. It is a component of the lower limb skeleton, not the upper limb, axial skeleton (spine), or skull. The other listed body regions contain multiple bones but none is the femur.
Category reason: This is a foundational question about the location and identification of a major skeletal structure, which is studied in Anatomy.

Question 34

Which cranial nerve supplies facial muscles?

Accepted Answer

Answer reason: It provides motor innervation to the muscles of facial expression (including muscles controlling eyelid closure and movements around the mouth). The vagus nerve primarily supplies laryngeal/pharyngeal muscles and parasympathetic innervation to thoracoabdominal organs. The glossopharyngeal nerve mainly innervates the stylopharyngeus and contributes to swallowing and taste from the posterior third of the tongue, while the accessory nerve supplies the sternocleidomastoid and trapezius.
Category reason: This item tests identification of which cranial nerve innervates a specific muscle group, which is foundational neuroanatomy rather than a nursing care decision.

Question 35

The sense of smell is carried by__?

Accepted Answer

Answer reason: Cranial nerve I transmits special sensory information for smell from olfactory receptor neurons in the nasal epithelium to the olfactory bulb and cortex. The optic nerve (CN II) carries vision, the trigeminal nerve (CN V) carries facial sensation and provides some nasal mucosal irritation sensation, and the glossopharyngeal nerve (CN IX) is involved in taste and pharyngeal sensation. Therefore, smell is carried primarily by CN I.
Category reason: This question tests identification of the cranial nerve responsible for olfaction, which is core neuroanatomy rather than a nursing care decision.

Question 36

Peripheral nervous system consists of—

Accepted Answer

Answer reason: The peripheral nervous system comprises neural structures outside the brain and spinal cord. It includes cranial nerves and spinal nerves that carry sensory input to the central nervous system and transmit motor output to muscles and glands. The brain, spinal cord, and cerebellum are components of the central nervous system, not the peripheral nervous system.
Category reason: This question tests basic structural components of the nervous system (CNS vs PNS), which is foundational human Anatomy rather than a nursing care decision.

Question 37

Femur is an example of?

Accepted Answer

Answer reason: The femur is the longest and heaviest bone in the human body, forming the primary weight-bearing structure of the thigh. Its large size and thick cortical bone allow it to withstand significant mechanical loads during standing and walking. The smallest bone is the stapes in the middle ear, and the femur is a long bone rather than a flat bone.
Category reason: This question tests identification of a specific human bone and its general anatomical characteristic (relative size), which is a core topic in Anatomy.

Question 38

Where is the thymus gland located?

Accepted Answer

Answer reason: The thymus is situated in the anterior superior mediastinum, posterior to the sternum and anterior to the heart and great vessels. This region is within the thoracic cavity, not the abdomen or pelvis. It is most prominent in childhood and involutes after puberty, but its anatomic location remains in the chest.
Category reason: This tests the anatomical location of an organ (thymus) within body cavities/mediastinum, which is a foundational Anatomy topic.

Question 39

How many joints are found in the human body?

Accepted Answer

Answer reason: This is a factual anatomy question about the approximate number of joints in the human body. Standard anatomy references commonly cite around 360 joints, acknowledging that counts vary depending on whether certain small joints and age-related fusion are included. The other options either correspond to different anatomy facts (e.g., 206 bones) or are not standard joint counts.
Category reason: This item tests a basic structural fact about the human musculoskeletal system (number of joints), which is an Anatomy topic rather than a nursing care decision.

Question 40

The thoracic cavity is separated from the abdominal cavity by the__________.?

Accepted Answer

Answer reason: Anatomically, the diaphragm is a dome-shaped skeletal muscle that forms the floor of the thoracic cavity and the roof of the abdominal cavity. It physically separates the two cavities while allowing passage of structures such as the esophagus, aorta, and inferior vena cava through specific openings. The mediastinum is a central compartment within the thorax, the mesentery supports abdominal intestines, and the sternum is an anterior chest wall bone, so none of these separate the cavities.
Category reason: This is a question about body cavity boundaries and the anatomical structure that divides thorax from abdomen, which is core Anatomy content rather than nursing care decision-making.

Question 41

What is the thread-like structure that joins one bone to another called?

Accepted Answer

Answer reason: Ligaments are dense bands of connective tissue that connect bone to bone at joints, providing stability and limiting excessive movement. Tendons connect muscle to bone, not bone to bone. Cartilage cushions and covers articular surfaces, and muscle generates movement rather than directly joining bones together. Therefore the structure described is a ligament.
Category reason: This question tests basic identification of connective tissues and their anatomical roles (bone-to-bone vs muscle-to-bone), which is an Anatomy concept.

Question 42

Q.1422: The correct landmark for ventrogluteal injection is located between which structures?

Accepted Answer

Answer reason: The ventrogluteal site is identified by placing the palm over the greater trochanter and locating the iliac crest/anterior superior iliac spine region to form a “V” with the index and middle fingers, targeting the gluteus medius/minimus muscle. This landmarking keeps the injection away from major nerves and vessels, particularly the sciatic nerve, making it a preferred IM site. The other options reference unrelated anatomical regions (shoulder/abdomen) or do not describe the standard ventrogluteal landmarks.
Category reason: This question tests anatomical landmarks used to locate a specific intramuscular injection site, which is primarily anatomy knowledge rather than prioritization, safety decision-making, or other nursing-judgment tasks.

Question 43

Which organ is the largest in the human body?

Accepted Answer

Answer reason: Among the listed choices, this is the largest internal organ by mass in the adult human body (the skin is the largest organ overall, but it is not an option). It plays major roles in metabolism, detoxification, bile production, and storage of glycogen and vitamins. The other options are essential organs but are smaller in typical adult size/weight compared with this one.
Category reason: This question tests basic knowledge of the size of major body organs, which is a foundational Anatomy concept rather than a nursing intervention or clinical judgment task.

Question 44

Which of the following bone is known as "Cheekbone"....?

Accepted Answer

Answer reason: It forms the prominence of the cheeks and contributes to the lateral wall and floor of the orbit. It also articulates with the temporal bone to form the zygomatic arch, an important facial landmark. The mandible is the lower jaw, the maxilla is the upper jaw, and the lacrimal bone is a small bone on the medial wall of the orbit.
Category reason: This item tests identification of a specific facial bone and its common name, which is a core topic in Anatomy rather than nursing decision-making or patient-care prioritization.

Question 45

The ______ Cavity is consist of: Brain, Meninges of brain & cerebrospinal fluid?

Accepted Answer

Answer reason: The cranial cavity is the space within the skull that houses the brain and its protective coverings (meninges). Cerebrospinal fluid circulates around the brain within the meningeal spaces (particularly the subarachnoid space), providing cushioning and helping maintain a stable environment. Thoracic and abdominal cavities contain organs of the chest and abdomen, respectively, and “ventral” refers broadly to the anterior body cavity rather than specifically to the brain.
Category reason: This question tests identification of a body cavity and its contents, which is a foundational structural topic in Anatomy rather than a nursing intervention or clinical judgment task.

Question 46

Larynx is located in ____.?

Accepted Answer

Answer reason: The larynx is part of the upper airway in the neck and sits immediately superior to the trachea, forming the passageway between the pharynx and the trachea. The lungs, bronchi, and bronchioles are structures distal to the trachea within the thorax, so they are anatomically below the larynx. Thus, among the listed choices, the trachea is the correct anatomical relation/location.
Category reason: This question tests the anatomical location/relationship of airway structures (larynx relative to trachea, bronchi, and lungs), which is a core Anatomy concept rather than a nursing intervention or clinical judgment task.

Question 47

Which of the following is a flat bone?

Accepted Answer

Answer reason: Flat bones are thin, curved bones that primarily protect underlying organs and provide broad surfaces for muscle attachment. The sternum is classified as a flat bone of the thoracic cage, protecting mediastinal structures and serving as an attachment for ribs and clavicles. In contrast, vertebrae are irregular bones, the patella is a sesamoid bone, and the ulna is a long bone.
Category reason: This question tests classification of bones by shape (flat vs long/irregular/sesamoid), which is foundational skeletal Anatomy.

Question 48

Which of the following is not common among plant and animal cells?

Accepted Answer

Answer reason: Animal cells lack a rigid outer cell wall and instead rely on a plasma membrane and extracellular matrix for structural support. Plant cells have a cell wall (primarily cellulose) that provides rigidity, protection, and helps maintain cell shape. Mitochondria, cytoplasm, and a nucleus are core components found in both typical plant and animal eukaryotic cells.
Category reason: This question tests basic cell structure components shared or not shared between plant and animal cells, which is a foundational anatomy concept about cellular organization.

Question 49

Number of bone in rib cage

Accepted Answer

Answer reason: The human rib cage contains 12 pairs of ribs, for a total of 24 ribs. Although the thoracic cage also includes the sternum and thoracic vertebrae, the question asks specifically for the number of bones in the rib cage as ribs. Therefore the total count is based on paired ribs rather than including other thoracic structures.
Category reason: This is a factual question about the number of ribs in the human thorax, which is a core topic in Anatomy rather than nursing care decision-making.

Question 50

Total Bones of a New Born Baby:

Accepted Answer

Answer reason: Newborns have a higher total bone count because many skeletal elements are still separate and have not yet fused (e.g., skull bones and portions of the pelvis). With growth and development, these bones gradually fuse, reducing the count to the typical adult total of 206. Therefore, the best matching option among those given is 300.
Category reason: This question tests knowledge of the number of bones at birth and subsequent fusion during growth, which is a core topic in Anatomy of the skeletal system.

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