Which statement about the hormonal control of fuel metabolism is true?
A) During the absorptive period, the liver converts glycogen into glucose.
B) During the postabsorptive period, most body cells preferentially use fatty acids for metabolic fuel.
C) Cells of the nervous system depend almost exclusively on glycogen for metabolic fuel.
D) Glucagon plays a major role during the absorptive period by causing the liver to convert glycogen into glucose and stimulating gluconeogenesis.
E) Cells of the pancreas release insulin during the postabsorptive period.

Question

Quizplus · Accepted Answer

During the postabsorptive period, when glucose is not readily available, most body cells will use fatty acids as their primary source of energy. This is because during this period, glucagon and other hormones stimulate lipolysis, which breaks down stored triglycerides into free fatty acids that can be used for fuel. In contrast, during the absorptive period, insulin promotes the uptake of glucose by cells and, in the liver, stimulates the conversion of glucose into glycogen for storage.

Which Statement About the Hormonal Control of Fuel Metabolism Is