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What is the role of the sinoatrial (SA) node in the heart?
What is the role of the sinoatrial (SA) node in the heart?
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Practice Questions
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What is the role of the sinoatrial (SA) node in the heart?
To pump blood to the lungs
To initiate the heartbeat
To regulate blood pressure
To close the heart valves
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The sinoatrial (SA) node acts as the natural pacemaker of the heart, initiating electrical impulses that trigger heartbeats.
Questions & Step-by-step Solutions
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Q
Q: What is the role of the sinoatrial (SA) node in the heart?
Solution:
The sinoatrial (SA) node acts as the natural pacemaker of the heart, initiating electrical impulses that trigger heartbeats.
Steps: 5
Show Steps
Step 1: Understand that the heart has a special part called the sinoatrial (SA) node.
Step 2: Know that the SA node is located in the right atrium of the heart.
Step 3: Learn that the SA node generates electrical signals.
Step 4: Realize that these electrical signals cause the heart to beat.
Step 5: Remember that the SA node is often called the 'natural pacemaker' because it controls the timing of the heartbeats.
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