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Nutritional Biochemistry and Feeding > Absorption > Flashcards

Flashcards in Absorption Deck (9)
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1

Define ABSORPTION

Absorption is the movement of food that has been digested into the bloodstream.

2

What influences the rate of absorption?

- the rate of digestion
- the surface area of food
- the volume of food (depends on whether the horse has been meal fed or trickle fed - affects the rate of passage).

3

What in the small intestine increases the rate of absorption?

Villi

4

What are three VFAs?

Acetate, butyrate and propionate

5

Define the ENDOPLASMIC RETICULUM

The endoplasmic reticulum is a network of membranous tubules within the cytoplasm of a cell. Involved in protein synthesis - once proteins are amino acids or small peptides, they are must easier to absorb.

6

Define GLUCOSE RECEPTORS

Glucose receptors (or transporters) are membrane proteins that facilitate the transport of glucose acorss the plasma membrane e.g. GLUT1 requires glucose all the time

7

What happens in the ileum?

A lot of the digestion should be completed by the time digesta reaches the ileum so it is largely a site for absoption.

8

Where is a lot of water absorbed?

The large intestine

9

What is absorbed in the small intestine?

Carbohydrates, fats and proteins.
All parts of the SI are sites for digestion and absorption, but particularly the ileum for absorption.