The small intestine Flashcards
1
Q
What happens when the pyloric sphincter valve opens?
A
, Chyme enters the duodenum where it mixes with digestive enzymes and then passes through the small intestine, in which digestion continues.
2
Q
What happens when chyme is fully digested?
A
it is absorbed into the blood.
3
Q
How much absorption of nutrients occurs in the small intestine?
A
95%
4
Q
Where are water and minerals reabsorbed back into?
A
the blood in the colon (large intestine)
5
Q
What is the pH in the colon?
A
acidic (5.6-6.9)
6
Q
What else is absorbed into the blood in the colon?
A
Some vitamins, such as biotin and vitamin K produced by bacteria
7
Q
What happens during defecation?
A
Waste material is eliminated from the rectum
