Absorption of Nutrients and the Large Intestine (lesson 6)

Question 1

Explain villi

Answer 1

In small intestine and it absorbed digested materials into bloodstream

Question 2

What do nutrients do in small intestine?

Answer 2

Nutrients move into capillaries by diffusion and active transport bring some nutrients into bloodstream

Question 3

What are absorbed into capillaries and in lacteals?

Answer 3

Digested proteins and carbs absorbed into capillaries

Digested lipids absorbed into lacteals

Question 4

What are some stuff absorbed in the stomach?

Answer 4

Water, vitamins, meds and alcohol

Question 5

Describe the large intestine

Answer 5

Not large (1.5m) and it is wide (6cm in diameter)

Question 6

What is the anatomy of the large intestine?

Answer 6

1) Caecum
2) Appendix
3) Asending colon
4) Transverse colon
5) Descending colon
6) Sigmoid colon

Question 7

What are the functions of the large intestine?

Answer 7

1) Water and salt absorption
2) Synthesis of vitamins B and K
3) Elimination of Wastes

Question 8

Describe the rectum and anus

Answer 8

Last 20cm of large intestine is the rectum and the anus entrance is at the end of rectum lined with a circular muscle called anal sphincter

Question 9

What happens if the rectum is full?

Answer 9

Sensory receptors in the walls send a message to the nervous system

Question 10

What does the anal sphincter do?

Answer 10

Allows body to control the timing of release of waste