Class 11 Biology Body Fluids and Circulations Structure and function of heart

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In humans,blood passes from the post caval to the diastolic right atrium of the heart due to:

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A
stimulation of the sino-auricular node
B
pressure difference between the post caval and atrium
C
pushing open of the venous valves
D
suction pull

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Class 11 Questions

Class 11

Biology Questions

Chapter

Body Fluids and Circulations

Subtopic

Structure and function of heart

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