large intestine

Question 1

What is the function of the ileocecal valve in the Large Intestine?

Answer 1

The Ileocecal valve regulates what enters the large intestine from the small intestine

Question 2

What is the Cecum in the large intestine?

Answer 2

A small pouch located in the Large intestine that absoprbs fluids and salts that are remaining after SI absorption. It mixes remains with mucus

Question 3

What is connected to the Cecum thats function is largely unknown but it is thought to harbor some bacteria for the LI function?

Answer 3

The Appendix

Question 4

Rectum

Answer 4

the last portion of the LI that terminates to the Anus.

Regulates excretion of waste from LI

Question 5

How much of our digestion occurs in the Large intestine? (think %)

Answer 5

5% of digestion occurs in the LI

Question 6

Main functions of LI

Answer 6

-absorb/reabsorb water from undigestied materal and excrete final waste

Question 7

LI and H20;

-how much h20 does it recieve a day? and how much of it is from food and how much from gut?

-what ions gets absorbed with h20 in LI?

-what ion gets excreted into the LI in order to REDUCE acidity?

-what vitamin does the LI absorb?

Answer 7

-The LI recieves 10L of h20 a day. 1.5 is from food and 8.5 is from the gut

-Na+ and Cl- get absorbed with h20 in LI

-HCO3- gets excreted into LI to reduce acidity

-LI absorbs vitamin K (produced by colon bacteria)

Question 8

What happens if water is not absorbed well?

Answer 8

Diarrhea can occur

Question 9

What is Feces composed of?

Answer 9

75% H20 and 25% solids

1/3 intestinal bacteria
2/3 undigested materials