Lipid digestion Flashcards
The __________ nature of lipids makes their digestion difficult
Hydrophobic
What is an emulsification droplet?
A droplet of lipid surrounded by bile salts
What is a micelle?
Monoglycerides and free fatty acids associated with bile salts
What is a chylomicron?
Golgi coats triglycerides with a film of phospholipids and protein
What does lipoprotein lipase do?
Hydrolyzes chylomicron triglycerides and monoglycerides + FFA
Where does lingual lipase come from?
From intrinsic salivary glands of tongue
Where does gastric lipase come from?
From fundic chief cells
What digests 10-15% of dietary fat?
Lingual lipase
Dietary lipase
How are the emulsification droplets formed?
Stomach churning and duodenal segmentation
In _______, bile has been released so the fat droplets surround bile _____
duodenum
salts
What does pancreatic lipase do?
Digests fat from surface of these droplets
What does colipase do?
Where does it come from?
Keeps pancreatic lipase attached to fat droplet
From pancreas
As micelles move past enterocytes, _____ _____ ____ and ________ enter the enterocyte.
free fatty acids
monoglycerides
Inside the enterocyte, free fatty acids and monoglycerides are resynthesized into ________ and are coated with phospholipids and protein to become ________, these leave the cell into the lacteal.
triglycerides
chylomicrons
Chylomicrons get into the _____ and lipoprotein lipase on the surface of endothelial cells, ________ the triglycerides into free fatty acids and monoglycerides for use in the body.
blood
hydrolyzes
