Biology, asked by anurag05ranitalab, 5 hours ago

Which initiates the electrical impulses to stimulate contraction in human heart?​

Answers

Answered by missfairy01
2

Answer:

SA node (sinoatrial node) – known as the heart's natural pacemaker. The impulse starts in a small bundle of specialized cells located in the right atrium, called the SA node. The electrical activity spreads through the walls of the atria and causes them to contract.

Answered by Itzpureindian
1

Explanation:

The heart's electrical system

SA node (sinoatrial node) – known as the heart's natural pacemaker. The impulse starts in a small bundle of specialized cells located in the right atrium, called the SA node. The electrical activity spreads through the walls of the atria and causes them to contract

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