Which of the following statements is not true about elimination of wastes from the body? Conscious opening of the external sphincter and smooth muscle contraction leads to the movement of the feces out of the alimentary canal. In the resting state the internal sphincter is relaxed while the external sphincter is contracted. Both sphincters must be relaxed in order for feces to pass out of the body. As the rectum fills it stimulates the internal sphincter to relax and the external sphincter to contract.

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