Question

write down the functions of 4 valves of the heart?​

Answer 1

Answer:

the heart has 4 valves: The mitral valve and tricuspid valve, which control blood flow from the atria to the ventricles. The aortic valve and pulmonary valve, which control blood flow out of the ventricles

Explanation:

Answer 2

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The four valves in order of circulation are:

Tricuspid Valve

Has three leaflets or cusps.

Separates the top right chamber (right atrium) from the bottom right chamber (right ventricle).

Opens to allow blood to flow from the right atrium to the right ventricle.

Prevents the back flow of blood from the right ventricle to the right atrium.

Related valve problems include: tricuspid atresia, tricuspid regurgitation, tricuspid stenosis

Pulmonary Valve (or Pulmonic Valve)

Has two leaflets.

Separates the right ventricle from the pulmonary artery. 

Opens to allow blood to be pumped from the right ventricle to the lungs (through the pulmonary artery) where it will receive oxygen.

Prevents the back flow of blood from the pulmonary artery to the right ventricle.

Related valve problems include: pulmonary valve stenosis, pulmonary valve regurgitation

Mitral Valve

Has two leaflets.

Separates the top left chamber (left atrium) from the bottom left chamber (left ventricle).

Opens to allow blood to be pumped from the lungs to the left atrium. 

Prevents the back flow of blood from the left ventricle to the left atrium.

Related valve problems include: mitral valve prolapse, mitral valve regurgitation, mitral valve stenosis

Aortic Valve

Has three leaflets, unless it's abnormal from birth, i.e., bicuspid aortic valve.

Separates the left ventricle from the aorta.

Opens to allow blood to leave the heart from the left ventricle through the aorta and the body.

Prevents the backflow of blood from the aorta to the left ventricle.

Related valve problems include: aortic regurgitation (also called aortic insufficiency), aortic stenosis