Absorbtion and Egestion

Question 1

How does the structure of villus help with absorption

Answer 1

1. Surface area for absorption
2. Diffusion Occurs fast
3. Concentration gradient maintained by blood flow
4. Lacteal collect the lipids before it goes to the circulatory system

Question 2

Adaptations of the Small Intestine

Answer 2

1. Very Long and gives time for food to be absorbed
2. It has villi which give the small intestine a large surface area. The Larger the area the faster food can be absorbed
3. Villi cantain blood capillaries so digested food passes into the blod
4. Villi have walls only one cell think so the digested food can easily pass

Question 3

What is Egestion?

Answer 3

Egestion is the discharge of undigested food

Question 4

Top right of Colon

Answer 4

Splenic flexure

Question 5

Top left of colon

Answer 5

Hexatic flexure

Question 6

Before the anus there was

Answer 6

Rectum