Which of the following statements are true of the sinoatrial node?
I.It is embedded in the right atrial muscle.
II.It is near the superior vena cava.
III.It initiates the electrical impulses that produce sequential atrial and ventricular contraction.
IV.It is near the right ventricle.

Question

Quizplus · Accepted Answer

The sinoatrial node (SA node), embedded in the right atrial muscle near the superior vena cava, is responsible for initiating the electrical impulses that produce sequential atrial and ventricular contraction.

Which of the Following Statements Are True of the Sinoatrial