The greatest effort of the heart is exerted by the
(a) right auricle
(b) right ventricle
(c) left auricle
(d) left ventricle

Correct Answer: (d) left ventricle

Explanation:

Ventricles have to pump the blood with higher pressure to make it reach different parts of the body, thus the greatest effort of the heart is exerted by the left ventricle.

Ventricles have thicker muscular walls than atria.

Given below is an image of the human heart with its main parts.

                                

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Updated on: 12-Jan-2023

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