Digestion of Lipids

[liveonearth]

What enzyme in the mouth begins lipid digestion?
lingual lipase

What can lingual lipase digest?
TGs-->monoglycerides, and FFA

What enzyme in infants turns milk into paracasein?
rennin aka chymosin

What cells make rennin in infants?
gastric chief cells

What enzyme then digests the paracasein?
pepsin

What adult gastric enzyme hydrolyzes TGs, short and medium chain fatty acids?
gastric lipase

Where do the hydrolyzed fats go from the stomach?
into the portal circulation

What causes micelle formation in the intestine?
bile
emulsifies

What happens to the micelles?
they are absorbed into intestinal cells where they are
re-esterified and packaged into chylomicrons
then exocytosed into lymph system

What hydrolyzes cholysteryl esters to free cholesterol???
cholesterol esterase

What enzymes attacks phospholipids to produce FFA, glycerol, choline (bases) and phosphoric acid?
phospholipase
remember phospholipase A is the one that gets fatty acids out of membranes

Where do the non-lingual lipases come from?
pancreas

Comments

[neptunia67.livejournal.com]

I've decided to give up my precious granola bars to try to get my triglycerides under control. :-( I'm sad, it was like one of my last weaknesses!

When is (are) the board(s) you are studying for? Is it a series of tests?

[newedition.livejournal.com]

Although I'm not on LJ very much, I still enjoy reading your posts. Congratulations on all your school work and good luck on the boards!