2007-03-11 03:14:35 · 5 answers · asked by JACKY M 1 in Science & Mathematics ➔ Physics
The heart must work harder to push it upwards against gravity.
2007-03-11 03:17:09 · answer #1 · answered by Heads up! 5 · 1⤊ 0⤋
Good question. I would imagine it really wouldn't have much of an effect at all. If you wanted to look more into it, maybe you could research about astronauts. Where they go there is no gravity, so if there were any complications with something like gravity effecting the bloodstream I think NASA would know about it by now.
I'm pretty sure it has such an unmeasurable effect that it is considered insignificant.
The only way you could take gravity into consideration is if you were hanging upside down or something and the blood began to pool in your head. Things like this only happen when you are doing something out of the norm though, we are built to be able to live in this environment. Same thing if you hang your arms down too far or hold it up for a while, it just restricts the flow a little.
2007-03-11 03:19:51 · answer #2 · answered by Life Is Illusive 3 · 0⤊ 1⤋
it's just easier for the heart to pump blood down. Thats why your face goes red when you're upside down and stuff. And also, ppl are made to lie down with the injured part raised if they injure their leg or nose or soemthing,.. thats so that the blood preferentially goes everywhere else!
oh and as for the guy above me, i think that the lack of gravity causes problems only cuz of the fact that your muscles and bone density start to atropy,.... i dont think it directly messes with blood flow.
2007-03-11 03:19:55 · answer #3 · answered by louzadodude 2 · 0⤊ 0⤋
It pulls de blood down to your feet
2007-03-11 03:16:37 · answer #4 · answered by JACKHOFF 3 · 0⤊ 0⤋
Go to nasa.gov for a definitive answer.
2007-03-11 03:17:53 · answer #5 · answered by ? 5 · 0⤊ 0⤋