Lipid metabolism — Flashcards

Flashcard 21: Give the life cycle of LDL.

Answer: formed by modification of IDL in peripheral tissues, delivers cholesterol to peripheral tissues

Flashcard 22: hormone-sensitive lipase

Answer:

Extra: degradation of TG stored in adipocytes

Flashcard 23: hepatic TG lipase

Answer:

Extra: degradation of TG remaining in IDL

Flashcard 24: lipoprotein lipase

Answer:

Extra: liberates TGs circulating in chylomicrons and VLDLs

Flashcard 25: Give the life cycle of HDL.

Answer: created by liver and intestine, delivers cholesterol from periphery to liver

Flashcard 26: pancreatic lipase

Answer:

Extra: degradation of dietary TG

Flashcard 27: During starvation, what kind of fuels are used by muscles and liver? Why?

Answer: primarily FFA/ketones, reserving glucose for RBCs

Flashcard 28: What are ketones usually dervied from?

Answer: fatty acids, amino acids

Flashcard 29: How many kcal are produced per gram of fat?

Answer: 9 kcal

Flashcard 30: Why are ketones usually produced?

Answer: oxidation fuel source during starvation