Absorption

Card Set Information

Author:
llwelp
ID:
197011
Filename:
Absorption
Updated:
2013-02-07 23:07:12
Tags:
Animal Nutrition
Folders:

Description:
The basics of absorption in animal nutrition
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  1. What is absorption?
    passage of small molecules into the body
  2. Where does absorption occur?
    • rumen, reticulum & omasum of ruminants
    • small intestine
    • large intestine
  3. What is the basic microanatomy of intestines?
    • epithelial cells
    • villi
    • microvilli
    • smooth muscle
  4. What are the types of absorption?
    • passive diffusion
    • facilitated diffusion
    • active transport
    • phagocytosis
  5. Requirements for Passive diffusion:
    • it moves with the concentration gradient
    • from High to low concentration
    • no energy necessary
  6. how does facilitated diffusion work?
    • moves with concentration gradient
    • from high to low concentration
    • requires carrier protein but no energy
  7. What are the requirements for active transport?
    • moves against the concentration gradient
    • from low to high concentration
    • requires energy through ATP and a carrier protein
  8. What does phagocytosis do?
    • part of a villi engulfs a nutrient
    • no digestion required
    • absorbs large particles

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