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Diagram showing colon rectum anus

The large intestine , also known as the large bowel , is the last part of the gastrointestinal tract and of the digestive system in vertebrates. Water is absorbed here and the remaining waste material is stored as feces before being removed by defecation. The colon [2] is the largest portion of the large intestine, so many mentions of the large intestine and colon overlap in meaning whenever anatomic precision is not the focus. Most sources define the large intestine as the combination of the cecum , colon, rectum , and anal canal. In humans, the large intestine begins in the right iliac region of the pelvis , just at or below the waist , where it is joined to the end of the small intestine at the cecum, via the ileocecal valve. It then continues as the colon ascending the abdomen , across the width of the abdominal cavity as the transverse colon , and then descending to the rectum and its endpoint at the anal canal. The colon is the last part of the digestive system.
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Colon, rectum, and anus

Diagram showing colon rectum anus
Diagram showing colon rectum anus
Diagram showing colon rectum anus
Diagram showing colon rectum anus
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Rectum - Wikipedia

The intestine is part of the digestive system. It is made up of the small intestine and the large intestine. The colon and rectum are parts of the large intestine. The colon is a U-shaped tube made of muscle, found below the stomach. The rectum is a shorter tube connected to the colon. Together, the colon and rectum are about 2 metres 6. They are surrounded by other organs including the spleen, liver, pancreas, bladder and reproductive organs.
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The colon and rectum

The rectum is a chamber that begins at the end of the large intestine, immediately following the sigmoid colon, and ends at the anus see also Overview of the Anus and Rectum. Ordinarily, the rectum is empty because stool is stored higher in the descending colon. Eventually, the descending colon becomes full, and stool passes into the rectum, causing an urge to move the bowels defecate. Adults and older children can withstand this urge until they reach a bathroom. Infants and young children lack the muscle control necessary to delay bowel movement.
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If you're seeing this message, it means we're having trouble loading external resources on our website. To log in and use all the features of Khan Academy, please enable JavaScript in your browser. Science Health and medicine Human anatomy and physiology Gastrointestinal system introduction. Meet the gastrointestinal tract!
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