lecture 30 Flashcards
bile production steps
- bile made in the liver, transported + stored in the gallbladder
- gallbladder contracts, bile released into cystic duct
- bile aids in lipid digestion
- bile reabsorbed from the ileum and returned to the liver via the hepatic portal vein
- liver uses these contituents to resynthesize bile, then stored int eh gallbladder
primary bile acids
synthesized by the liver
secondary bile acids
result from bacterial actions in the colon
what can enter the capillary
smaller free fatty acids and acylglycerols, glycerol
does absorption of fatty acids require energy
no
_____ FAs are absorbed and enter the _____ vein to the liver
short chain, portal
FA with more than ____ carbons are resynthesized by the _____ to ______
10, liver, triglycerides
what is most of the cholesterol in our diet
ester, must be hydrolyzed to free cholesterol to be absorbed
which protein is used for cholesterol absorption
NPC1L1 protein
does cholesterol absorption require energy
no
chylomicron
lipids that are resynthesized in the ER, leave the enterocytes by exocytosis as chylomicrons or VLDLs
components of chylomicrons
TAG (from MAG and DAG)
cholesterol esters and free cholesterol
phospholipids
vitamins A and E
peripheral apoprotein
apoC
integral apoprotein
apoB
where do chylomicrobs deliver dietary lipids
tissues over than liver, such as muscle and adipose tisue
where does the chylomicorn remnant go
delivered to the liver
