radomes.openskiesproject.org
Lauren5904 Lauren5904
  • 19-01-2017
  • Chemistry
Answered

what several factors help the veins push blood back to the heart

Verified Answer :

Lpryor
Lpryor Lpryor
  • 19-01-2017

A)Constant pumping from the heart which provides adequate pressure necessary to move the blood through the arteries and veins
B)Gravitational force

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