The ascending colon/descending colon traverses down the left side of the abdominal cavity and becomes the sigmoid colon.
More about colon:
The portion of the large intestine closest to the rectum and anus is known as the sigmoid colon (also known as the pelvic colon). It creates a loop that is typically between 14 and 16 inches (35 to 40 centimetres) long. Typically, the loop has the shape of the Latin letter S or the Greek letter sigma (sigma + -oid).
Due to its mobility, this colonic segment—which typically resides in the pelvis—can be pushed into the abdominal cavity.
Its job is to remove gaseous and solid waste from the digestive system. The superior arched part of the colon can retain gas due to the curved course it takes toward the anus, allowing the colon to discharge gas without passing faeces at the same time.
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