Question

The diagram of large intestine of man is given above. Identify the parts labelled A, B, C, D, E and F.

• A. A=Caecum, B=Vermiform appendix, C=Ascending colon, D=Transverse colon, E=Descending colon, F=Sigmoid
• B. A= Sigmoid, B= Vermiform appendix, C=Descending colon, D=Transverse colon, E=Ascending colon, F=Caecum.
• C. A= Sigmoid, B=Vermiform appendix, C=Ascending colon, D=Transverse colon, E = Descending colon, F= Caecum
• D. A= Caecum, B=Vermiform appendix, C=Sigmoid, D=Ascending colon, E=Transverse colon, F=Descending colon

Answer 1

Answer: (A)

The caecum is an intraperitoneal pouch, that is the beginning of the large intestine. It receives chyme from the ileum, and connects to the ascending colon of the large intestine. The vermiform appendix is a vestigial hollow blind-ended tube connected to the caecum. The ascending colon is the part of the colon located between the caecum and the transverse colon. The transverse colon is the longest and most movable part of the colon. It crosses the abdomen from the ascending colon at the hepatic or right colic flexure with a downward convexity to the descending colon where it curves sharply on itself beneath the lower end of the spleen forming the splenic or left colic flexure. The descending colon is the part of the colon from the splenic flexure to the beginning of the sigmoid colon and thereby part of the large intestine. The sigmoid colon is the part of the large intestine that is closest to the rectum and anus.