DU CANE MEDICAL IMAGING LTD / SCIENCE PHOTO LIBRARY DU CANE MEDICAL IMAGING LTD / SCIENCE PHOTO LIBRARY
Large intestine. Coloured barium X-ray of the abdomen showing a healthy large intestine (brown), the final section of the digestive tract. The pelvis (blue) and spine (purple) are also seen. The main part of the large intestine is the colon, although its final section, the rectum (lower centre), is also seen. The intestine provides a large surface area for the absorption of water, vitamins and mineral salts, and produces mucus to assist faecal movement and to protect its wall from mechanical damage.
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