Sigmoid Colon Anatomy
The loop is typically shaped like a greek letter sigma or latin letter s. It forms a loop that averages about 3540 cm in length.
The Colon Ascending Transverse Descending Sigmoid
After the distal descending colon has curved medially it enters the pelvis where it gains a mesentery and is then called the sigmoid colon.
Sigmoid colon anatomy. It is the last part of the colon before the rectum. Billions of bacteria coat the colon and its contents living in a healthy balance with the body. Muscles line the colons walls squeezing its contents along.
The sigmoid colon is attached to the posterior pelvic wall by a mesentery the sigmoid mesocolon. Sigmoid colon gross anatomy. 41 8143 14 votes.
The sigmoid colon is a short curving of the colon just before the rectum. The sigmoid colon is the part of the large intestine that is closest to the rectum and anus. The long length of the mesentery permits this part of the colon to be particularly mobile.
Lymphatics travel with vessels to the inferior mesenteric group. It acts as a site for water absorption from the faeces as a site for flatus to be stored before being expelled and as a site of peristalsis. It helps to flow the fecal matter from the colon to rectum and then to the anus.
Feces stays in this sigmoid colon until they are in a state of elimination from the body. The long length of the mesentery permits this part of the colon to be particularly mobile. The colon removes water salt and some nutrients forming stool.
This part of the colon normally lies within the pelvis but on account of its freedom of movement it is liable to be displaced into the abdominal cavity. Sigmoid colon a terminal section of the large intestine that connects the descending colon to the rectum. Its function is to store fecal wastes until they are ready to leave the body.
In this article we will discuss the anatomy of the sigmoid colon including its blood supply venous drainage lymphatic drainage. The sigmoid colon derives its name from the fact that it is curved in the form of an s greek sigma. Sigmoid colon or pelvic colon is a portion of the large intestine which is closest to the rectum and anus.
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