While training for a marathon,Lori begins to lose weight.To stop or slow her loss of body fat,her hypothalamus increases her appetite,causing Lori to ingest more calories than she normally would.What likely triggered this response to Lori's weight loss?

Question

Quizplus · Accepted Answer

The hypothalamus is responsible for regulating appetite and body weight. Leptin is a hormone that is produced by fat cells and signals the brain to decrease appetite and increase energy expenditure. When Lori begins to lose weight, her fat cells produce less leptin, which is detected by the hypothalamus as a decrease in leptin levels. To compensate for this decrease, the hypothalamus increases Lori's appetite so that she ingests more calories and stops or slows her weight loss. Therefore, choice B is the best answer.

While Training for a Marathon,Lori Begins to Lose Weight