Question

Glycogenolysis is the breakdown of glycogen into glucose. This occurs in the cells of the _____.

A. Stomach and Small Intestine.
B. Liver and Muscle
C. Kidney and Brain
D. Small intestine and Kidney.

Answer 1

B. Liver and Muscle

Glycogenolysis occurs in the liver and muscle cells where glycogen is stored and then broken down into glucose to maintain blood glucose levels and provide energy.

Step-by-step explanation:

Glycogenolysis is the breakdown of glycogen into glucose, and this process mainly occurs in the cells of the liver and muscle. When the body needs glucose, such as during fasting, intense exercise, or low carbohydrate intake, glycogen stored in the liver and muscles is hydrolyzed into glucose-1-phosphate, which can then enter the catabolic pathways for carbohydrates, ultimately providing energy to the body. Moreover, hormones such as glucagon and epinephrine can stimulate glycogenolysis in the liver and muscle, respectively, to maintain blood glucose levels.