Ascending colon

Ascending Colon

The ascending colon is a part of the large intestine, specifically the first main part of the colon. It is involved in the final stages of the digestive system, where it absorbs water and electrolytes from the partially digested food matter that enters from the small intestine.

Anatomy

The ascending colon begins at the cecum, a pouch-like structure that connects the small intestine and the colon. From the cecum, the ascending colon travels upward on the right side of the abdomen. It is approximately 25 centimeters long and is surrounded by the peritoneum, a membrane that forms the lining of the abdominal cavity.

The ascending colon ends at the right colic flexure (also known as the hepatic flexure), where it turns left to become the transverse colon. This junction is located near the liver, hence the alternative name.

Function

The primary function of the ascending colon is to absorb water and electrolytes from the food matter that has been partially digested in the small intestine. This process helps to form the stool. The ascending colon also houses beneficial gut bacteria that aid in the fermentation of unabsorbed material.

Clinical Significance

Diseases and conditions that can affect the ascending colon include colorectal cancer, diverticulosis, inflammatory bowel disease such as Crohn's disease, and ulcerative colitis. Symptoms of these conditions can include abdominal pain, changes in bowel habits, and blood in the stool.

Colonoscopy is a common procedure used to examine the ascending colon. It can detect polyps, tumors, and other abnormalities. Treatment for conditions affecting the ascending colon can include medication, lifestyle changes, and in severe cases, surgery.

See Also

• Digestive system
• Colon (anatomy)
• Large intestine
• Small intestine