Human Nutrition (Small Intestine)

Question 1

How many parts does the small intestine consist of?

Answer 1

Two

Question 2

What are the two main parts of the small intestine called?

Answer 2

The duodenum and the ileum

Question 3

What is the general function of the duodenum?

Answer 3

To carry out digestion

Question 4

What is the general function of the ileum?

Answer 4

It is the site of absorption

Question 5

Which part of the small intestine is the site of absorption?

Answer 5

The ileum

Question 6

What part of the small intestine carries out digestion?

Answer 6

The duodenum

Question 7

What are the adaptations of the small intestine for absorption?
(5)

Answer 7

It is very long
It has numerous villi and microvilli
The walls of the villi are very thin
There is a rich blood supply to carry away water-soluble products
Each villus has a lymph supply (lacteal) to carry away the fats

Question 8

There are numerous villi and microvilli in the small intestine, how does this aid absorption?

Answer 8

This increases the surface area for absorption to take place