How do bowel movements work?
The rectum, which is about 20 centimeters long, is the final section of the large intestine (colon). This is where the indigestible parts of our food collect until the bowel is emptied.
How Do Bowel Movements Work?
Gastrointestinal tract - Mayo Clinic
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Bowel Movements, Health, and Cancer Risk - Hillandale Primary Care
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