Blood Flow Through the Heart (Leaving Cert Biology): Flashcards

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Blood Flow Through the Heart
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Type of circulation system in the heart

Double circulation

Circulation to and from the lungs

Pulmonary circulation

Circulation to and from rest of body

Systemic circulation

Chamber where deoxygenated blood enters heart

Right atrium

Blood vessel bringing blood to right atrium

Vena cava

Valve between right atrium and right ventricle

Tricuspid valve

Blood vessel from right ventricle to lungs

Pulmonary artery

Type of blood entering left atrium

Oxygenated blood

Blood vessel bringing blood to left atrium

Pulmonary vein

Valve between left atrium and left ventricle

Bicuspid valve

Blood vessel from left ventricle to body

Aorta

Function of tricuspid and bicuspid valves

Prevent backflow to atria from ventricles

Function of semi-lunar valves

Prevent backflow to heart from arteries

Why are atria walls thin?

Blood pumped short distance to ventricles

Why are ventricle walls thick?

Blood pumped long distance

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