NURSING EXAM QUESTIONS
PATHOLOGY AND GENETICS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Which one has pacemaker cells within them?
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SA node
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AV node
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His bundle
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Purkinje fibres
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Explanation:
Detailed explanation-1: -The sinus node continuously generates electrical impulses, thereby setting the normal rhythm and rate in a healthy heart. Hence, the SA node is referred to as the natural pacemaker of the heart.
Detailed explanation-2: -Cardiac Pacemaker Cells Are Specialized Cardiomyocytes With a Distinct Gene Expression Program. Pacemaker cells comprise a small population of specialized cardiomyocytes within the sinoatrial node (SAN) that spontaneously fire to trigger each heartbeat.
There is 1 question to complete.