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Question Practice

What regulates the heart's rhythm?

Attempt the question, check the explanation, and continue with similar questions to build confidence before exams.

MCQ_SA
CBSE
Class 11
Biology
Biology
Body Fluids and Circulation
Question Bank

What regulates the heart's rhythm?

Single Answer MCQ
Q-00056520

What regulates the heart's rhythm?

1

Nervous system solely

2

Muscle contractions

3

Sinus node (SAN)

4

Blood pressure variability

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What structure prevents backflow of blood from the ventricles to the atria?

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Q4.

What is the sinoatrial node (SAN) commonly referred to as?

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