Zoology - Body Fluids and Circulation Question with Solution | TestHub
ZoologyBody Fluids and CirculationCardiac CycleEasy2 minPYQ_2020
ZoologyEasysingle choice
Identify the correct sequence of the cardiac cycle.
(i) Blood through the pulmonary vein and vena cava enters in left and right atria respectively.
(ii) AVN generates action potential for ventricles.
(iii) SAN brings about atrial systole.
(iv) Ventricular systole pushes blood away from the heart.
Options:
Answer:
B
Solution:
Blood through pulmonary vein and vena cava enters in left and right atria respectively and then atrial systole begins due to stimulation provided by SA node. Impulses from SA node will then be transferred to AV node which will bring about contraction of ventricular muscles which finally pushes blood away from heart.
Stream:NTA_ABHYAS_NEETSubject:ZoologyTopic:Body Fluids and CirculationSubtopic:Cardiac Cycle
⏱ 2mℹ️ Source: PYQ_2020
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