Flashcards in Digestion Deck (16):
1
Ghrelin
promotes food intake (acts on hypothalmic)
2
Bolus, Chyme
bolus- lump of food swallowed at one time
chyme- bolus processed by stomach
3
Pyloric sphincter, Ileocecal valve
pyloric- stomach to small intestine
ileocecal- small to large intestine
4
Function of s. intestine and what increases absorption
-95% absorption in duodenum+jejunum
Folds of Kerkring- increase by 3x
Villi- increase by 10x
brush border- increase by 20x
5
Functions of gallbladder
stores, releases bile
bile facilitates absorption of fat
6
functions of pancrease
secretes sodium bicarbonate as buffer
7
Gastrin
stims hcl prod in stomach
8
secretin
stims h2o and bicarbonate secreation in pancreatic juices
9
CCK
stims enzymes in pancreatic juices/ gallbladder contractions
10
GIP, GLP-1
inhibits gastric motility
11
Carb digestion steps(Enzymes)
mouth- a amylase
s intestine- pancreatic amylase, maltase, sucrase, lactase
monosaccarides enter capillaires and delivered to liver
12
Lipid digestion steps(enzymes)
mouth- lingual lipase
stomach- lingual lipase, gastric lipase
s intestine- bile, pancreatic amylase
-creates micelle which is absorbed by villi
FA + glycerol enter bloodstream bigger go I'm lympatic system
13
Pro digestion steps(enzymes)
Stomach- activates protease enzyme pepin
s intestine- absorb AA and transfered to liver
14
Where does most vitamin intake occur
jejumum+ ileum
15
what regulates Gastric emptying
contractions of stomach, nervous/horomone signals, acidity etc
16