SEM of glandular surface of human colon

SEM of glandular surface of human colon

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Credit: PROFESSORS P.M. MOTTA & F.M. MAGLIOCCA/ SCIENCE PHOTO LIBRARY

Caption: Colon surface. Coloured Scanning Electron Micrograph (SEM) of the glandular surface of the wall (mucosa) of the human colon. At centre is a large opening or Crypt of Lieberkuhn of a tubular gland (yellow). Around it (blue) and making up the gland are two types of epithelial cells: enterocytes covered in tiny bumps (microvilli) that enhance water absorption; goblet cells that occur in the small rounded depressions seen here, and which secrete mucus. The glandular colon wall is lubricated with mucus, and functions to produce faeces by absorbing water and vitamins from the food residue. Magnification: x1,180 at 6x7cm size. x1,430 at 4x5".

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Keywords: anatomy, colon, colon anatomy, crypts of lieberkuhn, digestive system, epithelium, gland, glands, gut, human body, intestine, large, large intestine, mucosa, mucous secreting epithelium, surface

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