Question

Q 7. Describe the nerve impulse on heart
rhythmic nature. *​

Answer 1

The electrical signal travels from your SA node through muscle cells in your right and left atria. The signal triggers the muscle cells that make your atria contract. The atria contract, pumping blood into your left and right ventricles.

Answer 2

Answer:

Heart is a muscular red coulured organ which pumps blood to the whole body. It has cardiac tissues. There are 2 nodes present in the heart : SA Node : Sinoatrial node or SA node produces an impulse which is responsible for the contraction of right and left atrium of the heart.

AV Node : Atrioventricular node or AV node uses the impulse produced by the SA node to contract the right and left ventricles.

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