BIO_EX4_ chp15

Chylomiccrons
- Very small fatty acids enter the villi directly without being recombined.
- * Form: fat Molecules, Cholesterol, and phospholipids coated in protein
- *Move from epithelial cells and into lacteals
- *Enter the left subclavian vein with lymph
Villi ( Vill=Hairy)
- Tiny Projections of the small intestine.
- Provide a very large surface area.
Microvilli

Further increase the surface area
How Small intestine organise
- 21 feet long
- Begining at the pyloric sphincter and ends at the large intestine
- Site of the most digestion and aborption of nutrients
Small intestine Structure
- Doudenum: first & shorteest section
- Jejunum: Middle section
- Ileum : Last and longest section
Suspended by mesentery from body wall
Function of liver
- Secretion of bile
- Role in carbohydrate digestion
- Role in lipid digestion
- Role in protein digestion
Function of liver
- Detoxifies poisons and harmful chemicals
- Removes worm out blood cells
- Synthesis of blood proteins
- Stores:
- *Fat
- *Glycogen
- *Iron
- *Several vitamins
What the role of the GAlibladder
- Store bile between meals
- Bile salt emulsify( break up) Lipids in chyme.
- This aid in absortion:
- fatty acids
- Cholesterol
- Fat-soluble vitamins by intestines

Author

Anonymous

80049

Card Set

BIO_EX4_ chp15

Description

Digestion

Updated

2011-04-16T21:50:57Z

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