Rate of heartbeat is determined by

Purkinje fibres

papillary muscles

AV-node

SA-node

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Answer: DSolution: The cardiac impulse originates from SA node. This impulse is of highest rhythmicity. By determining the rate of discharge of the cardiac impulse the SA node determines the rate of heartbeat.

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Question Text	Rate of heartbeat is determined by
Answer Type	Text solution:1
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Rate of heartbeat is determined by

Text solutionVerified

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