Digestive system Flashcards
1
Q
What is digestion?
A
breaking down larger food molecules into smaller ones
2
Q
What is absorption?
A
passage of these molecules into blood and lymph
3
Q
Layers of the alimentary canal?
A
- mucosa 2. submucosa 3. muscularis 4. serosa
4
Q
where is MALT located?
A
lamina propria of the mucosa layer
5
Q
What is mastication?
A
chewing
6
Q
saliva does?
A
moistens food, is a solvent and a buffer. Is 99.5% water and amylase
7
Q
What is deglutition?
A
swallowing
8
Q
What are the ranges for the stomach?
A
50 ml to 4 L
9
Q
Chief cells?
A
pepsinogen
10
Q
Gastric juice+food=
A
chyme
11
Q
Chemical digestion
A
H coming together with Cl. activate pepsinogen to pepsin, which digests proteins.
12
Q
Gastric absorption is impermeable except to?
A
water, ions, aspirin, alcohol
13
Q
What does the liver emulsify?
A
fat
14
Q
Kupffers cells?
A
fixed macrophages
15
Q
What is the pH of Bile?
A
7.6-8.6
