Which of the following is the correct path of blood through the circulatory system? A blood enters chamber, valve closes off the blood vessel, the heart contracts and pushes the blood forward
B
the heart contracts, blood enters chamber, valve closes off the blood vessel and pushes the blood forward
с
The heart relaxes and pushes forward the blood, blood enters chamber, and the valve closes off the blood
.
D
blood enters the chamber, valve closes off the blood vessel, the heart relaxes and the blood pushes forward

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