AMSA Advanced Nursing 2 Practice Test

Question: 1 / 400

In which part of the heart is the SA node located?

Left ventricle

Right ventricle

Right atrium

The sinoatrial (SA) node is located in the right atrium of the heart. It serves as the primary pacemaker of the heart, generating electrical impulses that initiate the heartbeat and set the rhythm for the entire heart. The position of the SA node at the junction where the superior vena cava meets the right atrium is crucial because it allows it to efficiently regulate heart rate and coordinate the contraction of the atria. This anatomical location is significant for maintaining the proper sequence of heart contractions, ensuring that the atria contract before the ventricles, which is essential for effective blood flow through the heart and to the body.

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Left atrium

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