Pregunta
The electrical impulse is delayed in the AV node before propagating to the AV bundle (of His). During this delay the __ contract.
Ask by Weaver Bowers. in the United States
Mar 17,2025
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During the delay in the AV node, the atria contract.
Solución
1. In the cardiac conduction system, the atrioventricular (AV) node delays the electrical impulse before it propagates to the bundle of His.
2. This delay allows the atria enough time to contract.
3. The contraction of the atria helps ensure that the ventricles are adequately filled with blood before they begin to contract.
Thus, during this delay, the **atria contract**.
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During this pause at the AV node, the atria contract, pushing blood into the ventricles. This coordinated timing ensures that the ventricles fill up completely before they receive the electrical signal to contract, optimizing the heart's efficiency. After the delay, the electrical impulse travels down the AV bundle, prompting the ventricles to contract and pump blood throughout the body. This sequential contraction is crucial for maintaining proper blood circulation and ensuring every heartbeat is effective.
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