Large Intestine Anatomy

The main regions of the large intestine are the cecum the colon and the rectum. The large intestine is a 1 to 15 meter continuation of the ileum extending from the ileocecal junction to the anus.

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As stool enters the rectum nerves there create.

Large intestine anatomy. The large intestine is responsible for processing indigestible food material chyme after most nutrients are absorbed in the small intestine. The superior part gives rise to the ascending colon while the inferior branch meets a dead end. The mucosa of the large intestine is smooth lacking the villi found in the small intestine.

The large intestine starts from the ileocecal sphincter present at the end of the ileum. The large intestine colon or large bowel is about 5 feet long and about 3 inches in diameter. Large intestine structure and anatomy.

The colon absorbs water from wastes creating stool. The large intestine absorbs water and forms feces and is responsible for defecation. The large intestine is named for its relatively large diameter not its length.

As mentioned earlier the large bowel starts from the point where the small intestine ends. Some parts of it are intraperitoneal while others are retroperitoneal. The large intestine consists of the cecum ascending colon transverse colon descending colon and sigmoid colon.

The innermost layer known as the mucosa is made of simple columnar epithelial tissue. It then forms an inclined t which runs both superiorly and inferiorly. The large intestine consists of the cecum appendix ascending colon transverse colon descending colon rectum and anal canal.

Bacterial flora break down additional carbohydrate residue and synthesize certain vitamins. Most of the large intestine is located inside the abdominal cavity with the last portion residing within the pelvic cavity. Like the rest of the gastrointestinal canal the large intestine is made of four tissue layers.

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