Zoology - Body Fluids and Circulation Question with Solution | TestHub
ZoologyBody Fluids and CirculationCardiac CycleEasy2 minPYQ_2020
ZoologyEasysingle choice
Which of the following structure in the normal human heart generates action potential to initiate a cardiac cycle?
Options:
Answer:
B
Solution:
The SA node (sino-atrial node) is a specialised nodal cardiac tissue which is present in the right upper corner of right atrium. It can generate the maximum number of actionpotentials i.e.70-75 per min, and is responsible for initiating and maintaining rhythmic contractile activity of the heart.
Stream:NTA_ABHYAS_NEETSubject:ZoologyTopic:Body Fluids and CirculationSubtopic:Cardiac Cycle
⏱ 2mℹ️ Source: PYQ_2020
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