SA Node as Heart's Pacemaker — NEET Biology
📚 Practice Concept📖 NCERT Source
Sino-atrial node is called the pacemaker of our heart. Why?
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QuestionPractice Question
Assertion (A): The sino-atrial node is the natural pacemaker of the heart. Reason (R): The sino-atrial node is located in the left upper corner of the left atrium.
📖 Solution & NCERT Explanation
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Correct answer: C — If assertion is true but reason is false.
NCERT confirms SAN is the natural pacemaker (Assertion true). However, NCERT states “A patch of this tissue is present in the right upper corner of the right atrium called the sino-atrial node” - Reason incorrectly states left atrium instead of right atrium, making it false.
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What does NCERT say about Sino-atrial node called pacemaker?
Sino-atrial node is called the pacemaker of our heart. Why?
Has this concept appeared in NEET?
Practice this NCERT concept with questions on MedicNEET.
Which chapter is this from?
Body Fluids and Circulation, Class 11 NCERT Biology.
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