Ascending colon
RUQ and RLQ
The ascending colon is the first part of the large intestine or colon that is located on the right side of the abdominal cavity. It begins at the end of the cecum, a pouch-like structure that connects the small intestine to the colon, and extends upward towards the liver. The ascending colon is around 20-25 cm long and is surrounded by peritoneum, a serous membrane that lines the abdominal cavity.
The ascending colon absorbs electrolytes and water from the undigested food that passes through it. It also serves as a storage area for fecal matter before it is moved through the rest of the colon and eventually eliminated from the body.
The ascending colon receives its blood supply from the superior mesenteric artery, which is a branch of the abdominal aorta. The innervation of the ascending colon is provided by the sympathetic and parasympathetic nervous systems, which regulate its contractions and secretions.
Diseases that can affect the ascending colon include colonic polyps, colon cancer, diverticulitis, and inflammatory bowel disease. Symptoms of these conditions can include abdominal pain, cramping, bloating, diarrhea, and constipation. Treatment for these conditions can include changes in diet, medication, and surgery.
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