2006-07-17 16:06:46 · 7 answers · asked by comet 1 in Science & Mathematics ➔ Biology
"Throughout the circulatory sytem there are many valves. There are 3 main types. The bicuspid valve which is found near the left ventricle and the aorta. Then there is the tricuspid valve which is found near the right ventricle and the aorta then finally there is the semilunar valve which is found in between the atria and the ventricle." (from Wikipedia)
If you are asking about the one-way valves in the veins (aka venous valves), they exist "to prevent backflow caused by gravity. " (from Wikipedia)
2006-07-17 17:11:53 · answer #1 · answered by phil_48 2 · 1⤊ 0⤋
Venous Circulatory System
2016-10-21 13:05:39 · answer #2 · answered by ? 4 · 0⤊ 0⤋
the main reason we have valves in the heart and in the venous system (veins) is to prevent backflow of blood, and thereby maintaining positive flow.
2006-07-17 17:01:27 · answer #3 · answered by Aaronkun 3 · 1⤊ 0⤋
My dear,
It makes heart to fuction well.If valves are not workiing it will increase blood pressure inside our heart.it makes blood to travel in its specified path for specified time.
2006-07-17 16:41:39 · answer #4 · answered by Anonymous · 0⤊ 0⤋
To prevent your blood from flowing backward between heartbeats.
2006-07-17 16:17:39 · answer #5 · answered by physandchemteach 7 · 1⤊ 0⤋
to keep the blood flowing and circulating in your body
2006-07-17 16:11:11 · answer #6 · answered by italianwiseass13 2 · 0⤊ 0⤋
they keep blood moving in one direction
2006-07-17 16:09:18 · answer #7 · answered by wizard 4 · 0⤊ 0⤋