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Question

Sino-atrial node is also called  of the heart.
  1. brain
  2. pacemaker
  3. inducer


Solution

The correct option is B pacemaker
Sino-atrial (SA) node is a cluster of conducting cells present in the right atrium. It has the capability to generate action potential that drives the contraction and relaxation of the heart muscles. So, SA node is also called as the pacemaker of the heart.

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