Answer to Question #31804 in Other Biology for khushal ahuja

Question #31804
How does blood move from lower parts of your body to heart against the force of gravity ?
1
Expert's answer
2013-06-12T09:11:54-0400
There are 2 main mechanisms which helps blood to move against the gravity force:

1)valves, which prevent reverse blood flow
2)sceletal muscular activity, which causes pressure on the vessel walls

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