Cardiac Cycle Flashcards by Maiha Irushadh

Q

Why AV valves and tricuspid and mitral open

A

Blood flows from atria to ventricles

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Q

When does AV valves, tricuspid and mitral open

A

Atrial pressure > ventricular pressure

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Q

When does Av valves tricuspid and mitral close

A

When ventricular pressure > atrial pressure

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Q

Why does AV valves Tricuspid and mitral close

A

To prevent back flow of blood

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Q

Semilunar valves when opens

A

Ventricular pressure > atrial pressure
During ventricular ejection

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Q

When semilunar valves close

A

Start of ventricular diastole

Atrial pressure > ventricular pressure

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Q

Why semilunar valves close

A

Blood back flow in arteries due to elastic recoil and raises arterial pressure

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