S4 Small Intestines

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Station 4 Small intestines I

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  • How does the villi help to increase rate of absorption?
  • S4 Small Intestines

    1. 1. Mouth EsophagusStomachSmall intestine<br />
    2. 2. *Small intestines<br />Structure of small intestines<br />6 meters long<br />Consists of: <br />Duodenum<br />Jejunum<br />Ileum (most water absorbed here)<br />Adapted to absorption<br />U<br />
    3. 3. What happens in the small intestine?<br /><ul><li> Secretion of intestinal juice which contains enzymes such as:</li></ul>Enterokinase, erepsin (a peptidase), maltase, sucrase, lactase and intestinal lipase to digest carbohydrates, fats and proteins<br /><ul><li>Absorption of digested food</li></ul>Inner walls of small intestine are thrown into numerous transverse folds to increase surface area for absorption. Presence of finger-like projections called villi. <br />
    4. 4. How does villi help to increase rate of absorption in the small intestine? Station 5<br />

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