25 Jun What is the main function of the AV valves
Question
What is the main function of the AV valves?
A) To prevent the flow of blood from atria to ventricles during atrial systole
B) To prevent the flow of blood from atria to ventricle during the quiescent period
C) To prevent the flow of blood from ventricles to atria during ventricular ejection
D) To prevent the flow of blood from arteries back into the ventricles during isovolumetric relaxation
2) During atrial systole, which of the following pressure gradients exist?
A) Higher pressure in atria compared to ventricles
B) Higher pressure in ventricles compared to atria
C) Higher pressure in ventricles compared to arteries
D) Same pressure in atria and ventricles
3) In the heart, blood will flow from areas of low pressure to areas of high pressure.
A) True
B) False
4)Which stage of the cardiac cycle helps to fill ventricles to maximum blood volume?
A) Quiescent period
B) Atrial systole
C) Ventricular ejection
D) Isovolumetric relaxation
5)During the quiescent period, blood is ONLY filling the atria (not the ventricle).
True or False
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