7
lesson pretestMultiple Choice

Pretest

Question 7 • Biology

Which statements describe the movement of blood through the heart? Choose two correct answers.

Answer
A
Atria and ventricles contract at the same time.
B
Valves allow for two-way blood flow.
C
Atria push blood into the ventricles.
D
Blood from the veins enters the ventricles.
E
Ventricles push blood out of the heart.

Explanation

The atria receive blood and contract to push it into the ventricles, so statement D is correct. The ventricles then contract and push blood out of the heart to the lungs or the rest of the body, making statement E correct. Valves keep blood moving in one direction, not two, and the atria and ventricles contract at different times.

AI-written and checked against the verified answer.

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