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: The ion mainly responsible for repolarization in neurons
A) Sodium
B) Potassium
C) Calcium
D) Chloride
Q: Gastric acid secretion is stimulated by
A) Glucagon
B) Secretin
C) Gastrin
D) Cholecystokinin
Q: The function of bile salts
A) Enzyme activation
B) Emulsification of fats
C) Protein denaturation
D) Carbohydrate digestion
Q: The phase of the cardiac cycle when ventricles contract
A) Atrial systole
B) Ventricular systole
C) Diastasis
D) Isovolumetric relaxation
Q: The oxygen-hemoglobin dissociation curve shifts right due to
A) Increased 2,3-BPG
B) Decreased temperature
C) Alkalosis
D) Low CO₂