Design, Function, & Mechanics Flashcards
1
Q
function of digestive system
A
absorption, excretion, physical & chemical breakdown of food
2
Q
define PERISTALSIS
A
wave of symmetrical contracting & relaxing muscles down tube in anterograde direction
3
Q
describe the steps to digestion
A
- chew & mix saliva = bolus & salivary amylase break down carbs
- stomach secrete HCI, enzymes, & mucus (+bolus) = chyme
- chyme mixes with bile in small intestine & receives pancreatic juice enzymes to make enzymes to break down chyme
4
Q
define HYDROLYSIS
A
water’s role in digestion where it helps enzymes break down food
5
Q
where does absorption happen
A
villi in mucosa, blood & lymphatic capillaries
6
Q
what do blood capillaries absorb
A
- simple sugars
- small proteins
- amino acids
- simple fatty acids
- water
- water soluble vitamins
7
Q
lymphatic capillaries (lacteals) absorb what
A
fat & fat soluble vitamins
8
Q
what vitamins are made and absorbed in the colon
A
B & K
