Art Labeling Label the terms on the figure. Terms Ileum Transverse colon Cecum Haustrum Transverse mesocolon Rectum Epiploic appendages Ascending colon Vermiform appendix Right colic flexure Anal canal External anal sphincter Sigmoid colon Teniae coli Cut edge of mesentery Descending colon Ileocecal valve Superior mesenteric artery Left colic flexure Gross anatomy of the large intestine
The Correct Answer and Explanation is:
colic flexure** (or splenic flexure), directs the contents downwards into the descending colon on the left side.
The colon has several distinct features. The outer surface is marked by teniae coli, which are three distinct longitudinal bands of smooth muscle. Their tonic contraction gathers the colon into a series of pouches called haustra. Also visible are epiploic appendages, which are small, fat filled sacs of visceral peritoneum.
The descending colon leads to the S shaped sigmoid colon, which terminates in the rectum. The rectum serves as a temporary storage site for feces before they are eliminated through the anal canal. This final passage is controlled by sphincters, including the voluntary external anal sphincter. The entire structure is supported by the mesentery, shown here as a cut edge of mesentery, which also carries blood vessels like the superior mesenteric artery that supply the intestine.
