Which of the following statements about the SA node is correct?

Practice question

Question

Which of the following statements about the SA node is correct?

Options

Choose one · Correct answer highlighted

It is located in the left atrium. It generates electrical impulses that regulate heartbeat. Correct It delays impulses before they reach the ventricles. It is also known as the AV node.

Explanation

The SA node (sinoatrial node) acts as the pacemaker of the heart, initiating electrical impulses that regulate heartbeats.

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