What initiates a signal for defaecation?(a) Faeces in the colon(b) Faeces in the rectum(c) Faeces in the caecum(d) Faeces in the ileumI have been asked this question in unit test.This interesting question is from Disorders in Digestive System topic in division Digestion and Absorption of Biology – Class 11

What initiates a signal for defaecation?(a) Faeces in the colon(b) Fae

1.	What initiates a signal for defaecation?(a) Faeces in the colon(b) Faeces in the rectum(c) Faeces in the caecum(d) Faeces in the ileumI have been asked this question in unit test.This interesting question is from Disorders in Digestive System topic in division Digestion and Absorption of Biology – Class 11
Answer» The correct choice is (b) Faeces in the rectum For explanation I would say: The DIGESTIVE wastes, solidified into coherent faeces in the rectum initiate a neural reflex causing an urge or desire for its REMOVAL. Defaecation is a voluntary process and is CARRIED out by MASS peristaltic movements.

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