1. Tardigrade
  2. Question
  3. Biology
  4. Read the following statements and select the correct option. Statement 1: The SA node acts as pacemaker. Statement 2: The SA node is located in the wall of the right atrium near the interatrial septum.

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Q. Read the following statements and select the correct option.
Statement 1 : The $SA$ node acts as pacemaker.
Statement 2 : The $SA$ node is located in the wall of the right atrium near the interatrial septum.

Body Fluids and Circulation

Solution:

The heartbeat originates from the $SA$ node which acts as a pacemaker. $SA$ node lies in the wall of the right atrium near the opening of the superior vena cava.