Please help! I know that veins carry deoxygenated blood but am not sure if they ALL carry deoxygenated blood. Simple question but I'm stuck : (
2007-04-17 05:23:45 · 11 answers · asked by Janelli 2 in Science & Mathematics ➔ Biology
some of you say yes and others say no.
the exact question my test is;
All veins return deoxygenated blood to the heart.
True or False
2007-04-17 05:32:08 · update #1
sorry I meant heart not heard. lol
2007-04-17 05:35:04 · update #2
No. The pulmonary vein carries blood back to the heart from the lungs and that blood is oxygenated.
2007-04-17 05:26:52 · answer #1 · answered by J T 2 · 1⤊ 0⤋
The peripheral veins eventually get deoxygenated blood back to the heart, but after the deoxygenated blood gets to the right side of the heart it's pumped through the pulmonary arteries into the lungs, where it's oxygenated, and the freshly oxygenated blood goes through the pulmonary veins back to the left side of the heart. That would be a "no."
2007-04-17 05:47:28 · answer #2 · answered by Anonymous · 0⤊ 0⤋
The simplest definition is that any vessel that returns blood, de-oxygenated or not, to the heart is a vein. The reverse, all vessels that deliver blood from the heart are arteries.
The Pulmonary artery and vein are reversed in oxygen saturation from the rest of the body so they can be a bit confusing. Another way of Identifying an artery is by the fact that they carry pressure from the heart's pumping it too the tissues of the body while veins, picking up the blood from the tissues, has very little pressure.
2007-04-17 05:41:57 · answer #3 · answered by dragon4space 2 · 0⤊ 0⤋
Yes, whether they directly bring the deoxygenated blood right back to the heart, or filter into larger veins which directly bring the deoxygenated blood back to the heart. However there is an exception. It's the pulmonary vein, it brings deoxygenated blood into the lungs where it gets oxygenated and then it is sent to the heart to pump to the rest of the body.
2007-04-17 05:28:01 · answer #4 · answered by jay k 6 · 0⤊ 0⤋
Friend, the Pulmonary Vein is the only vein in Human Body
which carries oxygenated blood from the lungs to the left atrium
of the Human heart.
2007-04-17 05:38:42 · answer #5 · answered by Tanay,the cool guy 2 · 0⤊ 0⤋
As the cells are farthest away from the heart, they have lost some of their oxygen and taken on junk, and look darker. Blood that has been oxygenated in the lungs is redder. Being exposed to air is different than being infused with oxygen while in the lungs - it occurs on a cellular level. Like the difference between sipping a glass of water, and dumping a bucket of water over your head.
2016-04-01 05:48:59 · answer #6 · answered by Anonymous · 0⤊ 0⤋
Most veins carry blood toward the heart, i.e. de-oxygenated blood. The pulmonary vein, however, does carry oxygenated blood - so it is true, not ALL veins carry de-oxygenated blood.
I got that from the wikipedia page on "vein": http://en.wikipedia.org/wiki/Vein
2007-04-17 05:27:08 · answer #7 · answered by Steven D 5 · 0⤊ 0⤋
Yes. Capillaries and arteries carry the oxygenated blood.
http://www.infomat.net/infomat/focus/health/health_curriculum/images/heart.gif
1 exception, I forgot, the pulmonary vein bringing oxygenated blood back from the lungs.
2007-04-17 05:27:17 · answer #8 · answered by ellietricitycat 4 · 0⤊ 0⤋
The Pulmonary vein is the exception.
.
2007-04-17 05:31:22 · answer #9 · answered by tlbs101 7 · 0⤊ 0⤋
in theory, yea. but in reality, no because there are deoxygenated blood stuck to the membrane of vessels due to adhesion forces.
2007-04-17 05:28:23 · answer #10 · answered by tmacfan1121 2 · 0⤊ 0⤋