Sample Questions — Regulation of cardiac activity
Try 5 questions below from Regulation of cardiac activity. Get all 33 in the MedicNEET app.
MCQ
Which structure is primarily responsible for intrinsic cardiac regulation?
✅ Correct Answer: B
Intrinsic regulation is myogenic and depends on nodal tissue, specifically the SA node.
MCQ
What is the role of the neural center located in the medulla oblongata?
✅ Correct Answer: A
The medullary center does not initiate contraction but modulates rate and force. It uses sympathetic and parasympathetic pathways to adjust heart function. Regulation is external and adaptive.
👆 Want all 33 Regulation of cardiac activity questions? Get them in the app.
Download MedicNEET →
MCQ
Why is myogenic regulation critical for survival in humans?
✅ Correct Answer: B
The SAN ensures rhythmic contraction even in isolation. External input is helpful but not essential for basic rhythm. Important in cases of nerve injury or unconsciousness.
MCQ
A patient has low cardiac output but normal SA node function. Which part is most likely
malfunctioning?
✅ Correct Answer: A
If SA node is functional but cardiac output is low, a lack of sympathetic stimulation could be
the reason.
MCQ
Why is the human heart called myogenic in nature?
✅ Correct Answer: C
The heart contains self-excitable nodal tissue. This allows it to contract without external stimulation. It is not neurogenic like invertebrate hearts.
Practice All 33 Questions from Regulation of cardiac activity
You've seen 5 sample questions. Get all 33 with detailed NCERT-mapped explanations in the MedicNEET app.
📲 Download MedicNEET FreeAvailable on Android • 12,771 Biology Questions • 3 Formats