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NCLEX Practice Questions on Perioperative Care Questions
Question 1 of 5
The greater omentum is to the small intestine
Correct Answer: B
Rationale: The greater omentum, a peritoneal fold, lies anterior to the small intestine, draping over it. 'Anterior,' is correct, per anatomical positioning (e.g., Netter's Atlas). 'Posterior,' is incorrect; it's behind the stomach, not intestine. 'Superficial,' is vague but implies skin-level. 'Deep,' suggests below, not above. Anterior's directional accuracy makes B the precise answer.
Question 2 of 5
The structural and functional unit of the thyroid gland is the
Correct Answer: A
Rationale: The thyroid gland's functional unit is the follicle, where thyroid hormones are synthesized and stored. 'Follicle,' is correct, per histology texts like Ross and Pawlina, consisting of follicular cells around colloid. 'Acini,' are exocrine gland units (e.g., pancreas). 'Islets of Langerhans,' are pancreatic endocrine units. 'Alveoli,' are lung units. Follicles' role in T3/T4 production distinguishes A as the accurate answer, specific to thyroid anatomy.
Question 3 of 5
The following are examples of monosaccharides EXCEPT
Correct Answer: C
Rationale: Monosaccharides are simple sugars, single units not hydrolyzed further. 'Maltose,' is correct as the exception, a disaccharide of two glucose units, per biochemistry texts like Lehninger. 'Glucose,' 'Fructose,' and 'Galactose,' are monosaccharides, basic sugar building blocks. Maltose's dimeric structure, requiring hydrolysis, distinguishes C as the accurate answer, unlike the single-unit sugars.
Question 4 of 5
The process of micturition is controlled by the nervous system
Correct Answer: D
Rationale: Micturition (urination) is regulated by the autonomic nervous system, with parasympathetic and sympathetic inputs, though somatic control aids voluntary aspects. 'Autonomic,' is correct, per physiology (e.g., Tortora), coordinating bladder contraction (parasympathetic) and inhibition (sympathetic). 'Somatic,' controls external sphincter voluntarily, not the full process. 'Parasympathetic,' is partial, not whole. 'Sympathetic,' inhibits, not controls alone. Autonomic's overarching role makes D the precise answer.
Question 5 of 5
The amount of air inspired or expired in a single breath is
Correct Answer: B
Rationale: Tidal volume is the air moved in a normal breath, about 500 ml. 'Tidal volume,' is correct, per respiratory physiology (e.g., Guyton). 'Vital capacity,' is maximum breathable volume. 'Residual volume,' remains after exhalation. 'Inspiratory reserve volume,' is extra inspiratory capacity. Tidal volume's resting measure makes B the accurate answer.