Gastrointestinal Lecture 1 Part 2 General Overview Flashcards
1
Q
Functions of gastrointestinal physiology
A
- Motility
- Digestion
- Absorption
- Secretion
2
Q
Motility refers to …?
A
Motility refers to the movements of the gastrointestinal tract
3
Q
What is the 2 purposes of motility?
A
- Moves contents from the mouth to the anus
- Mixes contents to facilitate digestion and absorption
4
Q
Digestion
A
process of breaking down large particles of food and high-molecular weight substances into small molecules
- Breaking down molecules into building block so they can be absorbed; digestion primarily occurs in stomach and small intestine and absorption mostly happens in small intestine
5
Q
Where does digestion primarily happen?
A
stomach and small intestine
6
Q
Absorption
A
movement of the products of digestion across the intestinal epithelium into the body
- circulation moves around to supply body
7
Q
Secretion
A
Release of substances into the lumen of the gastrointesintal tract, which facilitate digestion, absorption and motility
- occurs all along GI tract
8
Q
How are function of GI interdependant?
A
optimizes absorption