enow.com Web Search

Search results

  1. Results from the WOW.Com Content Network
  2. Small intestine - Wikipedia

    en.wikipedia.org/wiki/Small_intestine

    The lining of the small intestine includes microscopic folds to increase its surface area in all vertebrates, but only in mammals do these develop into true villi. [ 22 ] The boundaries between the duodenum, jejunum, and ileum are somewhat vague even in humans, and such distinctions are either ignored when discussing the anatomy of other ...

  3. Intestinal villus - Wikipedia

    en.wikipedia.org/wiki/Intestinal_villus

    Intestinal villi (sg.: villus) are small, finger-like projections that extend into the lumen of the small intestine.Each villus is approximately 0.5–1.6 mm in length (in humans), and has many microvilli projecting from the enterocytes of its epithelium which collectively form the striated or brush border.

  4. Ileum - Wikipedia

    en.wikipedia.org/wiki/Ileum

    The ileum (/ ˈ ɪ l i əm /) is the final section of the small intestine in most higher vertebrates, including mammals, reptiles, and birds.In fish, the divisions of the small intestine are not as clear and the terms posterior intestine or distal intestine may be used instead of ileum. [2]

  5. Jejunum - Wikipedia

    en.wikipedia.org/wiki/Jejunum

    The jejunum is the second part of the small intestine in humans and most higher vertebrates, including mammals, reptiles, and birds.Its lining is specialized for the absorption by enterocytes of small nutrient molecules which have been previously digested by enzymes in the duodenum.

  6. Gastrointestinal tract - Wikipedia

    en.wikipedia.org/wiki/Gastrointestinal_tract

    In human anatomy, the intestine (bowel or gut; Greek: éntera) is the segment of the gastrointestinal tract extending from the pyloric sphincter of the stomach to the anus and as in other mammals, consists of two segments: the small intestine and the large intestine. In humans, the small intestine is further subdivided into the duodenum ...

  7. Circular folds - Wikipedia

    en.wikipedia.org/wiki/Circular_folds

    The circular folds slow the passage of the partly digested food along the intestines, and afford an increased surface for absorption. [4] They are covered with small finger-like projections called villi (singular, villus). Each villus, in turn, is covered with microvilli. The microvilli absorb fats and nutrients from the chyme.

  8. Intestinal gland - Wikipedia

    en.wikipedia.org/wiki/Intestinal_gland

    Intestinal glands are found in the epithelia of the small intestine, namely the duodenum, jejunum, and ileum, and in the large intestine (colon), where they are sometimes called colonic crypts. Intestinal glands of the small intestine contain a base of replicating stem cells , Paneth cells of the innate immune system , and goblet cells , which ...

  9. Brush border - Wikipedia

    en.wikipedia.org/wiki/Brush_border

    The small intestine tract: This is where absorption takes place. [2] [3] [4] The brush borders of the intestinal lining are the site of terminal carbohydrate digestions. The microvilli that constitute the brush border have enzymes for this final part of digestion anchored into their apical plasma membrane as integral membrane proteins.