Science, asked by mamidivilokreddy, 5 months ago

How are the atria connected to the ventricles?

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Answered by sangita4291

Answer:

wait a minute ...... I will help you

Answered by shibangidey

Answer:

The upper heart chambers (atria) contract. The AV node sends an impulse into the ventricles. The lower heart chambers (ventricles) contract or pump. The SA node sends another signal to the atria to contract, which starts the cycle over again.

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