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Which structure in the heart initiates the electrical impulse for contraction?

Practice Questions

1 question
Q1
Which structure in the heart initiates the electrical impulse for contraction?
  1. Atrioventricular node
  2. Sinoatrial node
  3. Bundle of His
  4. Purkinje fibers

Questions & Step-by-step Solutions

1 item
Q
Q: Which structure in the heart initiates the electrical impulse for contraction?
Solution: The sinoatrial (SA) node initiates the electrical impulse that triggers heart contractions.
Steps: 0

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