Question

A group of specialised cardiac muscles in the wall of right atrium that initiates heart beat​.give one word

Answer 1

Answer:

● A group of specialised cardiac musclesin the wall of right atrium that initiates heart beat is called the SA node.

Answer 2

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$\blue\longmapsto\:$A group of specialised cardiac muscles in the wall of right atrium that initiates heart beat is called $\small\underline\mathcal\purple{{SA\:node}}$