Biology, asked by Manya3368, 2 months ago

what prevents black folw of blood inside the heart during conteraction
a.vavles in heart
b.thick muscular walls of ventricals
c.thin wAll of aretia
d.all of the above

Answers

Answered by sahilsharma5215

0

Answer:

valves of heart prevents backflow of blood

Answered by singhvandana112004

0

Answer:

valves in heart (option (a))

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