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Why sino atrial node is called …

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Why sino atrial node is called pacemaker

Posted by Amit Kumar 2 years, 1 month ago

CBSE > Class 12 > Biology

1 answers

Anushka Singh 1 year, 11 months ago

The sino-atrial (SA) node is a specialized bundle of neurons located in the upper part of the right atrium of the heart. The cardiac impulse originating from the SA node triggers a sequence of electrical events in the heart, thereby controlling the sequence of muscle contraction that pumps blood out of the heart. Since the SA node initiates and maintains the rhythmicity of the heart, it is known as the natural pacemaker of the human body.

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