Single correct option
Which chamber of the human heart has the thickest muscular wall, and why?
- A. Right ventricle, because it pumps blood to the whole body
- B. Left atrium, because it receives blood from the lungs
- C. Right atrium, because it receives blood from the body
- D. Left ventricle, because it pumps blood to the whole body
Show answer and solution
Answer: (D) Left ventricle, because it pumps blood to the whole body
The left ventricle pumps oxygenated blood into the aorta at high pressure to reach all parts of the body, so it needs the thickest wall. The right ventricle pumps blood only to the nearby lungs and has a thinner wall. Atria receive blood and have thin walls.
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