The undigested substance (faeces) enter into the ________ of large intestine through ________ valve which prevents backflow of faecal matter:
(1) Caecum, ileo-caecal
(2) Colon, ileo-colon valve
(3) Rectum, Recto-colonic
(4) Colon, pyloric valve
(1) The undigested, unabsorbed substances called faeces enters into the caecum of the large intestine through ileo-caecal valve, which prevents the back flow of the faecal matter. It is temporarily stored in the rectum till defaecation. (page-264).