Medical Terminology

Cholesterol – a type of lipid called a sterol. It is an essential structural component of cell membranes. It is a precursor for the synthesis of steroid hormones, bile acide, and vitamin D.

UC – free or unesterified cholesterol; the active form of cholesterol

CE – cholesterol ester; the esterified or storage form of cholesterol 


Apolipoprotein – an apoprotein bound to a lipid; acts a ligand to help the lipoprotein interact with a receptor on a cell

Apoprotein – proteins that traffic collections of lipids

Chylomicrons – used to get triglycerides to muscles and adipocytes and cholesterol from the gut to the liver

Lipoprotein – a protein wrapped “vehicle” that transports lipids



Lipid – Lipids are fatty, waxy, or oily compounds that serve as the building blocks for all living cells. The 3 main types are phospholipids, sterols, and triglycerides.