Which of the following is a storage function of the liver?

• A. Secretion of insulin
• B. Absorption of nutrients
• C. Storage of glycogen
• D. Oxygen transport

Answer: (C)

The liver’s storage function centers on storing glycogen, a branched polymer of glucose. After you eat, excess glucose is converted into glycogen and stored in liver cells; between meals, glycogen is broken down back into glucose and released into the blood to keep blood sugar stable. This quick-release storage role is a key metabolic job of the liver. By contrast, insulin secretion is done by the pancreas, nutrient absorption mainly happens in the gut, and oxygen transport is carried by red blood cells, not by the liver. So storing glycogen is the liver’s classic storage function.