B6.10.2 - Micelles

What cells are lipids absorbed from the ileum by?

epithelial

What process requires the formation of micelles?

absorption of lipids from the ileum

What are large lipid molecules broken down into during lipid absorption?

monoglycerides and fatty acids

What happens in lipid absorption after large lipid molecules are broken down into monoglycerides and fatty acids?

the liver secretes bile salts

What does the liver secrete during lipid absorption?

bile salts

What do bile salts associate with during lipid absorption?

monoglycerides and fatty acids

What is formed when bile salts associate with monoglycerides and fatty acids?

micelles

What molecules join together to form micelles?

bile salts, monoglycerides, and fatty acids

What shape are micelles?

circular

What are micelles made up of?

phospholipid tails

What do micelles do after they are formed?

move through the ileum to the epithelial cells

What do micelles do once they attach to the epithelial cells?

incorporate themselves into the cell membrane

What do epithelial cells do once the micelles attach to them?

absorb the micelles

Why are micelles important?

they increase the SA:V which increases the rate of hydrolysis