MCQ Collection
Applied Physiology MCQs
Practice Applied Physiology questions with answers and explanations.
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Correct Answer: D. Countercurrent multiplier
Explanation:
Countercurrent multiplier is a loop-of-Henle mechanism that establishes the medullary osmotic gradient for urine concentration.
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Correct Answer: C. Baroreceptor reflex
Explanation:
Baroreceptor reflex is a rapid autonomic response that buffers short-term changes in arterial blood pressure.
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Correct Answer: D. Action potential refractory period
Explanation:
Action potential refractory period is a period that limits immediate re-excitation of an excitable membrane after depolarisation.
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Correct Answer: A. Parathyroid hormone
Explanation:
Parathyroid hormone is a hormone that raises plasma calcium through bone, kidney and vitamin-D related effects.
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Correct Answer: D. Gastrin
Explanation:
Gastrin is a gastrointestinal hormone that stimulates gastric acid secretion and mucosal growth.
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Correct Answer: A. Erythropoietin
Explanation:
Erythropoietin is a renal hormone that stimulates red-cell production in bone marrow during hypoxia.
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Correct Answer: A. Ovulation
Explanation:
Ovulation is release of a mature oocyte from the dominant follicle after the mid-cycle luteinising hormone surge.
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Correct Answer: C. Primary haemostasis
Explanation:
Primary haemostasis is formation of a platelet plug at a site of vascular injury.
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Correct Answer: B. Vestibulo-ocular reflex
Explanation:
Vestibulo-ocular reflex is a reflex that stabilises gaze during head movement by producing compensatory eye movement.