A) beating of heart
B) squeezing effect of muscles upon veins running through them
C) peristaltic wave that travel along the alimentary canal
D) none of these
Correct Answer: B
Solution :
When muscles contract, they have squeezing effect on veins running through them, this is called muscle pump/ or second heart of the body e.g. Calf muscle.You need to login to perform this action.
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