what happens if there are no valves present in heart
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Your heart is a strong muscle that can pump blood in spurts to all regions of your body right down to every capillary. The more difficult part is getting it back.
Rather than elastic arteries that carry away blood quickly and efficiently on the outbound route, we now have tiny capillaries that need to be cleared into increasingly larger veins to return the blood for cleaning in the liver and re-oxidizing in the lungs before the next departure.
Moreover, blood flows under high pressure in artery (BP is measured as pressure of blood exerted on wall of artery) but in veins the blood pressure is less than 10mm of Hg. To allow flow of blood back to heart, lumen inside vein is larger in diameter and to prevent backflow, series of valves are there.
hope it helps
Rather than elastic arteries that carry away blood quickly and efficiently on the outbound route, we now have tiny capillaries that need to be cleared into increasingly larger veins to return the blood for cleaning in the liver and re-oxidizing in the lungs before the next departure.
Moreover, blood flows under high pressure in artery (BP is measured as pressure of blood exerted on wall of artery) but in veins the blood pressure is less than 10mm of Hg. To allow flow of blood back to heart, lumen inside vein is larger in diameter and to prevent backflow, series of valves are there.
hope it helps
Answered by
2
The blood flows back into the same path and the oxygenated blood and deoxygenated blood mix together this results in causing HEART ATTACK
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