Cardiac Cycle/ Heart Stuff Flashcards by Maya Gohil

Systole

Ventricles and atria CONTRACT

Moving blood out

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Diastole

Heart muscle RELAXES

Filling with blood

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Right side of heart

DeOxygenated blood

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Left side of the heart

Oxygenated blood

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Aorta

Left side of heart

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Vena cava

Return deoxygenated blood to right side of heart

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Pulmonary artery

Takes deoxygenated blood to the lungs

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Pulmonary artery

Takes oxygenated blood from the lungs back to the heart

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Arteries

Away from the heart

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Veins

Return to the heart

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Left ventricle

Thick muscular wall
Pushes blood around whole body
Needs more pressure for contractions

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Tendons

Hold valves in place so they don’t flip inside out

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Atrioventricular valves

Between atria and ventricles

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Semi lunar valves

Between ventricles and arteries

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Flow of blood

Right atrium
Right AV valve
Right ventricle 
Out semilunar valve
Pulmonary artery
Lungs
Pulmonary vein
Heart
Left atrium
Left AV valve
Left ventricle 
Out semilunar valve
Aorta
Vena Cava

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Valves

Prevent back flow of blood

Stop back flow into atria when ventricles contract

Stop backflow into ventricles from arteries

When a chamber contacts, pressure

Increases