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: An individual with split-brain surgery may have severed the
A) Cerebellum
B) Corpus callosum
C) Thalamus
D) Hypothalamus
✅ Correct Answer: B
Explanation: The corpus callosum connects the two brain hemispheres; its severance affects inter-hemispheric communication.
Q: Cognitive dissonance refers to
A) Conflict between two actions
B) Agreement of thoughts
C) Emotional repression
D) Enhanced memory
✅ Correct Answer: A
Explanation: Cognitive dissonance is the mental discomfort from holding contradictory beliefs or behaviors.
Q: A child who covers their eyes and believes others can’t see them is showing
A) Egocentrism
B) Conservation
C) Animism
D) Object permanence
✅ Correct Answer: A
Explanation: Egocentrism, as described by Piaget, is a child's inability to see from another’s perspective.
Q: The reinforcement schedule delivering rewards after unpredictable time intervals is
A) Fixed ratio
B) Variable interval
C) Fixed interval
D) Continuous
✅ Correct Answer: B
Explanation: A variable interval schedule reinforces behavior at random time periods, encouraging steady responses.
Q: Encoding failure leads to
A) Overlearning
B) Poor recall
C) Increased retention
D) Heightened attention
✅ Correct Answer: B
Explanation: When information is not encoded effectively, it is not stored and cannot be later retrieved.