Question

What is the location of the SAN?

• A. Left upper corner of right ventricle
• B. Right upper corner of right ventricle
• C. Right upper corner of left atrium
• D. Right upper corner of right atrium

Answer 1

Answer:

D. Right upper corner of right atrium

• The SAN or the sinoatrial node is located in the upper right corner of the right atrium.

• It has the ability to generate 70-75 action potentials per minute.

• It is hence known as the pacemaker of the heart.