What is the name given to the structure that sets the pace of the activities of the heart?

What is the name given to the structure that sets the pace of the activities of the heart?
  1. Cardiac Output
  2. Heart Functions
  3. Pacemaker
  4. Heart Rate

Solution

Sino-atrial node (SAN) generates the maximum number of action potentials per minute (70-75/min) and therefore, it sets the pace of the activities of the heart. Hence it is called the Pacemaker.

Asked in: NCERT

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