NURS 220 Study Guide - Midterm Guide: Lipoprotein Lipase, Unsaturated Fat, Adipocyte
Document Summary
Chapter 7: explain the following causes/theories of obesity: Lipoprotein lipase activity the enzyme lipoprotein lipase (lpl) promotes fat storage in fat and muscle cells. People with high ldl activity are especially efficient at storing fat. Obese people generally have much more lpl activity in their fat cells than lean people do. This high lpl activity makes fat storage especially efficient. Fat cell development- when energy in exceeds energy out, much of the excess energy is stored in the fat cells of adipose tissue. The amount of fat in adipose tissue reflects both the number and size of the fat cells. Obese people have more fat cells than healthy-weight people; their fat cells are also larger. After they reach their maximum size, more cells can develop to store more fat. Thus, obesity develops when a person"s fat cells increase in number, size, or both. With fat loss, the size of the fat cell shrinks, but their number cannot.
