Which component of the heart is responsible for initiating the electrical impuls

Which component of the heart is responsible for initiating the electrical impulse?

Which component of the heart is responsible for initiating the electrical impulse?

Step 1: Understand that the heart has a special part that controls its beating.
Step 2: Learn that this special part is called the sinoatrial node, often shortened to SA node.
Step 3: Know that the SA node is located in the right atrium of the heart.
Step 4: Realize that the SA node sends out electrical signals that make the heart muscles contract.
Step 5: Conclude that because it starts these electrical signals, the SA node is responsible for initiating the heartbeat.

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