Physiology MCQs
Physiology MCQs help medical and dental students develop a thorough understanding of the body's functional mechanisms. These multiple-choice questions focus on various systems such as cardiovascular, respiratory, renal, digestive, endocrine, and neurophysiology. Practicing these MCQs enhances knowledge retention and exam performance in tests like MDCAT, NTS, USMLE, and FCPS. Whether you're preparing for academic exams or professional licensure, these quizzes provide a solid framework for mastering the dynamic processes of the human body.
Q: The normal resting membrane potential of neurons is about
A) −30 mV
B) +70 mV
C) −70 mV
D) 0 mV
Q: The blood vessel layer controlling vasoconstriction
A) Tunica adventitia
B) Endothelium
C) Tunica media
D) Tunica intima
Q: The region responsible for language production
A) Wernicke’s area
B) Occipital lobe
C) Temporal lobe
D) Broca’s area
Q: The phase of the action potential when sodium channels open
A) Resting phase
B) Depolarization
C) Repolarization
D) Hyperpolarization
Q: Acid-base imbalance resulting from prolonged vomiting
A) Metabolic alkalosis
B) Respiratory alkalosis
C) Metabolic acidosis
D) Respiratory acidosis
Q: The effect of sympathetic stimulation on heart rate
A) Increases
B) Irregular
C) Decreases
D) No effect
Q: The hormone that raises blood calcium levels
A) Insulin
B) Calcitonin
C) Parathyroid hormone
D) Thyroxine
Q: Pulmonary circulation differs from systemic by having
A) Deoxygenated arteries
B) Higher pressure
C) Oxygenated veins
D) Thicker walls
Q: The fastest conduction in the heart occurs in
A) AV node
B) Bundle of His
C) Purkinje fibers
D) SA node
Q: Peristalsis in the gastrointestinal tract is regulated by
A) Somatic nervous system
B) Lymphatic system
C) Central nervous system
D) Enteric nervous system