Fats (Triacylglycerols)

Fats are composed of glycerol esterified to three fatty acids. Fats are derived from three primary sources: (1) the diet; (2) de novo biosynthesis, particularly in liver; and (3) storage depots in adipocytes. Processes by which these sources are utilized in animals are summarized in Figure 18.3. Breakdown of fats by lipases yields fatty acids and glycerol.

See also: Adipocytes, Fat Absorption and Transport, Bile Salts and Emulsion of Fats, Mobilization of Stored Fat, Energy Storage, Triacylglycerol Synthesis, Action of Insulin, Lipids