Multiple choice

A ventricle is a muscular chamber that pumps blood out of the heart and into the circulatory system. Which among the following statements regarding the ventricles of heart is FALSE?

  1. When the right ventricle relaxes, there is more pressure in the pulmonary trunk.

  2. The left ventricle is smaller and its walls are thinner than those of the right ventricle.

  3. The chordae tendineae are attached to papillary muscles at the opposite bottom side of the right ventricle.

  4. When the left ventricle relaxes, the aortic semilunar valve gets closed.

  5. When the left ventricle contracts, the left AV valve gets closed.
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The left ventricle is the pumping chamber for the systemic circulation. Because a greater blood pressure is required to pump blood through the much more extensive systemic circulation than through the pulmonary circulation, the left ventricle is larger and its walls are thicker than those of the right ventricle.

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