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Question

Pacemaker influences


A

Contraction of heart muscles

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B

Flow of blood in heart

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C

Rate of heart beat

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D

Formation of nerve impulse

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Solution

The correct option is C

Rate of heart beat


Pacemaker is a collection of cardiac muscle fibres specialized in the production of electrical impulses. The heart rate is determined by the rate at which pacemaker produces it’s impulses. Thus it determines the heart rate.


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