Which of the following is known as the pacema | vedclass

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(A) The $SA$ node (Sinoatrial node) is a specialized patch of tissue present in the right upper corner of the right atrium. It is responsible for init

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$SA$ node

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(A) The $SA$ node (Sinoatrial node) is a specialized patch of tissue present in the right upper corner of the right atrium. It is responsible for initiating and maintaining the rhythmic contractile activity of the heart. Because it generates the maximum number of action potentials per minute ($70-75$ per minute) and controls the heart rate,it is known as the natural pacemaker of the heart.

Which of the following is known as the pacemaker of the heart?

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$A$ patch of nodal tissue responsible for initiating the rhythmic contractile activity of the heart is present in:

............ can generate the maximum number of action potentials and is responsible for initiating and maintaining the rhythmic contractile activity of the heart. Therefore,it is called the pacemaker.

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