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: Atrial natriuretic peptide causes
A) Sodium reabsorption
B) Sodium excretion
C) Vasoconstriction
D) Increased ADH secretion
Q: Primary muscle used during normal quiet breathing
A) Internal intercostals
B) Sternocleidomastoid
C) External intercostals
D) Diaphragm
Q: The region of the brain that controls body temperature
A) Pons
B) Medulla
C) Cerebellum
D) Hypothalamus
Q: A decrease in blood pH will cause hemoglobin to
A) Increase oxygen binding
B) Form carboxyhemoglobin
C) Release more oxygen
D) Denature
Q: The fastest phase of depolarization in cardiac muscle
A) Phase 4
B) Phase 2
C) Phase 0
D) Phase 1