In humans, blood passes from the post caval to the diastolic right atrium of heart due to.
A.
pushing open of the venous valves
B.
suction pull
C.
stimulation of the sino auricular node
D.
pressure difference between the post caval and atrium
Answer :
suction pull
Releted MCQ Question on Zoology >> Body Fluids and Circulation
Releted Question 1
Adult human RBCs are enucleated. Which of the following statement(s) is/are most appropriate explanation for this feature? (1) They do not need to reproduce (2) They are somatic cells (3) They do not metabolize (4) All their internal space is available for oxygen transport