Question

Explain the four vales of the heart

Answer 1

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The valves permit the flow of blood in One Direction only and not in reverse direction, preventing the back flow of the blood.

HEART❤ HAS FOUR VALVES :

1⃣TRICUSPID VALVE: which guards the opening between the right auricle and the right ventricle.

2⃣BICUSPID VALVE: which guards the opening between the left auricle and the left ventricle.

3⃣AORTIC SEMILUNAR VALVES: located at the point of origin of aorta from the left ventricle and are three in number.

4⃣PULMONARY SEMILUNAR VALVES: Located at the opening of right ventricle into the the pulmonary artery and are three in number.

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Answer 2

Hey...

• As the heart muscle contracts and relaxes, the valves open and shut. This lets blood flow into the ventricles and atria at alternate times. Here is a step-by-step description of how the valves work normally in the left ventricle:
• When the left ventricle relaxes, the aortic valve closes and the mitral valve opens. This lets blood flow from the left atrium into the left ventricle.
• The left atrium contracts. This lets even more blood to flow into the left ventricle.
• When the left ventricle contracts, the mitral valve closes and the aortic valve opens. This is so blood flows into the aorta and out to the rest of the body.
• While the left ventricle is relaxing, the right ventricle also relaxes. This causes the pulmonary valve to close and the tricuspid valve to open. This lets blood flow into the right ventricle that was returned to the right atrium from the body.
• When the left ventricle contracts, the right ventricle also contracts. This causes the pulmonary valve to open and the tricuspid valve to close. Blood flows out from the right ventricle to the lungs before it is returned to the left atrium as fresh, oxygenated blood.

Hope this helps u dude ☺️