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: Oxygen consumption increases most during
A) Fasting
B) Exercise
C) Sleep
D) Rest
Q: The structure that acts as the pacemaker of the heart
A) SA node
B) Purkinje fibers
C) AV node
D) Bundle of His
Q: Baroreceptors primarily detect
A) Blood pressure changes
B) Oxygen saturation
C) Blood viscosity
D) Blood glucose
Q: Insulin secretion is stimulated by
A) Hyperglycemia
B) Fasting
C) Glucagon
D) Hypoglycemia
Q: The primary action of aldosterone
A) Water excretion
B) Glucose metabolism
C) Protein synthesis
D) Sodium retention