Heart Flashcards

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1
Q

Function of right and left atria

A

Right- receives deoxygenated blood from the body via vena cava

Left- receives oxygenated blood from the lungs via pulmonary vein

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2
Q

Function of ventricles

A

Right- receives deoxygenated blood from the right atrium
Left- receives oxygenated blood from the left atrium

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3
Q

Function of pulmonary artery and vein

A

Artery - carries deoxygenated blood from the right ventricle to the lungs
Vein - carries oxygenated blood from the lungs to the left atrium

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4
Q

Function of Vena cava and Aorta

A

Aorta - carries oxygenated blood from the left ventricle to the body
Vena cava - return deoxygenated blood used by body to the right atrium

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5
Q

Function of semi lunar valves

A

Prevent back flow of blood into ventricles

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6
Q

Function of atrioventricular valves

A

Prevent back flow of blood into the atria

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7
Q

What is atrial contraction

A

Pressure in the atria increase when they contract
This forces blood into the ventricles

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8
Q

What is ventricular contraction

A

The atria relax and the ventricles contract causing an increase in pressure in the ventricles

Atrioventricular valves snap shut to prevent back flow of blood into the relaxed atria
Pulmonary artery and aorta fill with blood

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9
Q

What is relaxtion

A

Semi lunar valves snap shut due to high pressure in aorta and pulmonary artery to prevent back flow of blood into the relaxed ventricles

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