the sigmoid colon is part of the large intestine.
the sigmoid colon is part of the large intestine.
is the sigmoid colon part of the large or small intestine?
the large intestine
the sigmoid colon is the part of the large intestine after the descending colon and before the rectum. the name "sigmoid" means s-shaped (see sigmoid; cf. sigmoid sinus). the walls of the sigmoid colon are muscular, and contract to increase the pressure inside the colon, causing the stool to move into the rectum.









































the sigmoid colon is supplied with blood from several branches (usually between 2 and 6) of the sigmoid arteries, a branch of the ima. the ima terminates as the superior rectal artery.









































sigmoidoscopy is a common diagnostic technique used to examine the sigmoid colon.









































section::::structure.:sections.:rectum.
large intestine
behind the sigmoid colon are the external iliac vessels, overy, obturator nerve, the left piriformis, and left sacral plexus of nerves.









































in front, it is separated from the bladder in the male, and the uterus in the female, by some coils of the small intestine.









































section::::clinical significance.









































diverticulosis often occurs in the sigmoid colon in association with increased intraluminal pressure and focal weakness in the colonic wall. it is a common cause of hematochezia.
sigmoid colon