Select the incorrect statement regarding defe | vedclass

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(B) Defecation is the process of eliminating solid waste from the body. $1$. It is initiated by a neural reflex called the defecation reflex,which is

Vedclass · Accepted Answer

It is an involuntary action.

Vedclass · Answer

(B) Defecation is the process of eliminating solid waste from the body. $1$. It is initiated by a neural reflex called the defecation reflex,which is triggered by the distension of the rectum. $2$. While the initial reflex is involuntary,the final expulsion of feces is under voluntary control through the relaxation of the external anal sphincter. $3$. Therefore,stating that it is an involuntary action (Option $B$) is incorrect because the final act of defecation involves voluntary control of the anal sphincter. $4$. It is mediated by mass peristaltic movements in the colon that push the feces into the rectum.

Select the incorrect statement regarding defecation.

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