Two questions are based on a transverse section of the human heart. A labels the thick wall of the left ventricle and B labels a heart valve. Why does A have thick walls, and what is the function of B?

Question

Two questions are based on a transverse section of the human heart. A labels the thick wall of the left ventricle and B labels a heart valve. Why does A have thick walls, and what is the function of B? — Exam MCQ

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C. A: Because it pumps blood to different parts of the body; B: Prevents backflow of blood — The left ventricle has a thick muscular wall to generate pressure for systemic circulation. Heart valves prevent backflow.

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A. A: Because it pumps blood to the left auricle; B: Does not let the blood flow forward

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B. A: Because it pumps blood to the right auricle; B: Prevents backflow of blood

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D. A: Because it pumps blood to the pulmonary artery; B: Pumps blood to aorta

Two questions are based on a transverse section of the human heart. A labels the thick wall of the left ventricle and B labels a heart valve. Why does A have thick walls, and what is the function of B?

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