PHYSIOLOGY
CARDIOVASCULAR PHYSIOLOGY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Select all of the options which are true of atrial systole.
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Atria contract
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Blood is pumped from ventricles into atria
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AV valve is open
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SL valve is open
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Explanation:
Detailed explanation-1: -A-V Valves Open; Semilunar Valves Closed As the atria contract, the pressure within the atrial chambers increases, which forces more blood flow across the open atrioventricular (AV) valves, leading to a rapid flow of blood into the ventricles.
Detailed explanation-2: -When the ventricles relax, atrial pressure exceeds ventricular pressure, the AV valves are pushed open and Page 2 blood flows into the ventricles. However, when the ventricles contract, ventricular pressure exceeds atrial pressure causing the AV valves to snap shut.
There is 1 question to complete.