Human Endocrine System

Step 1: Understanding liver functions.
The liver is a vital organ responsible for several key functions in the body:
Detoxification: The liver helps detoxify harmful substances, including drugs, alcohol, and metabolic waste products.
Bile secretion: The liver produces bile, which is important for the digestion and absorption of fats in the small intestine.
Glycogen storage: The liver stores glucose as glycogen and can release it when blood glucose levels drop.
Step 2: Understanding insulin production.
Insulin is produced by the pancreas, not the liver.
The pancreas has specialized cells known as beta cells that secrete insulin to regulate blood sugar levels.
The liver responds to insulin by storing glucose as glycogen, but it does not produce insulin itself.
Step 3: Conclusion.
Since insulin production is the responsibility of the pancreas and not the liver, the correct answer is (D) Insulin production.