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: Parathyroid hormone increases blood calcium levels by
A) Inhibiting bone resorption
B) Enhancing calcium excretion
C) Blocking vitamin D synthesis
D) Stimulating bone resorption
Q: Cardiac output is the product of
A) Stroke volume and heart rate
B) Oxygen saturation and heart rate
C) Blood pressure and volume
D) Venous return and resistance
Q: The primary function of the loop of Henle
A) Water reabsorption
B) Bicarbonate secretion
C) Glucose reabsorption
D) Urea secretion
Q: An action potential is propagated due to
A) Active transport
B) Chemical binding
C) Passive diffusion
D) Ion channel activation
Q: The main site of nutrient absorption in the GI tract
A) Stomach
B) Duodenum
C) Small intestine
D) Large intestine