Biology, asked by uttu5040, 1 year ago

What are the roles of the sino atrial node?

Answers

Answered by Anonymous
4

Answer:

it produces electrical impulses which are used for contraction or relaxation of heart muscles

Answered by Anonymous
5

The heart's natural pacemaker – the SA node – sends out regular electrical impulses from the top chamber (the atrium) causing it to contract and pump blood into the bottom chamber (the ventricle)

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