Physiology MCQs
Physiology MCQs help medical and dental students master body functions across cardiovascular, respiratory, renal, digestive, endocrine, and neurophysiology systems. Ideal for MDCAT, NTS, USMLE, and FCPS, these quizzes boost retention and exam success.
Q: Aldosterone acts primarily on the
A) Proximal tubule
B) Collecting duct
C) Distal tubule
D) Loop of Henle
Q: Muscle fatigue during prolonged activity is caused by
A) Lactic acid buildup
B) ATP surplus
C) Oxygen surplus
D) Decreased ADP
Q: The neurotransmitter released by sympathetic postganglionic neurons
A) Norepinephrine
B) Serotonin
C) Acetylcholine
D) Dopamine
Q: Hyperventilation leads to
A) Metabolic acidosis
B) Respiratory alkalosis
C) Respiratory acidosis
D) Metabolic alkalosis
Q: The hormone that promotes glycogen breakdown
A) Glucagon
B) Prolactin
C) Aldosterone
D) Insulin