Which of the following correctly lists the organ sand regions of he gastrointestinal tract in sequence after the stomach?

a. Duodenum, jejunum, ileum, descending colon, transverse colon, ascending colon, rectum, anus

b. Duodenum, ileum, jejunum, large intestine, anus, rectum

c. Jejunum, duodenum, ileum, large intestine, anus, rectum

d. Duodenum, jejunum, ileum, ascending colon, transverse colon, descending colon, rectum, anus

Option D, Duodenum, jejunum, ileum, ascending colon, transverse colon, descending colon, rectum, anus

Explanation:

The Duodenum, jejunum, ileum are the parts of small intestine and ascending colon, transverse colon, descending colon, rectum, anus are part of large intestine.

Basically after the gastrointestinal tract, the chyme enters into the small intestine where it passes through duodenum, jejunum, ileum. The shortest region is duodenum with length of 25.4 cm, while length of jejunum and ileum is 0.9 meter and 1.8 meter respectively.

After the small intestine the food enters the large intestine which has four major parts -

a) the cecum

b) the colon - it has three subdivision - ascending colon, transverse colon, descending colon (the food passes through) in given order

c) the rectum

d) the anus

Hence, option D is correct