What is the main function of liver in mammals?

The liver is a vital organ in the body of mammals and performs several essential functions:

1. Metabolism: The liver plays a central role in metabolism, which includes the breakdown, synthesis, and storage of various nutrients. It helps in the metabolism of carbohydrates, proteins, and lipids.

2. Storage: The liver serves as a storage organ for various substances, including glucose (in the form of glycogen), vitamins (such as vitamins A, B12, and D), and minerals (such as iron and copper).

3. Detoxification: The liver is responsible for detoxifying harmful substances in the body, including drugs, alcohol, and metabolic waste products. It breaks down these substances into less toxic forms that can be excreted from the body.

4. Bile Production: The liver produces bile, a substance that aids in the digestion and absorption of fats. Bile is stored in the gallbladder and released into the small intestine when needed.

5. Protein Synthesis: The liver synthesizes various proteins that are essential for the body's functioning. These include blood proteins like albumin and clotting factors, as well as enzymes that facilitate metabolic reactions.

6. Regulation of Blood Glucose Levels: The liver plays a crucial role in maintaining blood glucose levels. It stores excess glucose as glycogen through a process called glycogenesis. When blood glucose levels drop, the liver breaks down glycogen and releases glucose into the bloodstream through glycogenolysis.

7. Waste Elimination: The liver assists in the elimination of waste products from the body. It filters toxins and waste from the blood and converts them into bile or other forms that can be excreted.

Overall, the liver is involved in a wide range of essential functions, including metabolism, detoxification, storage, protein synthesis, blood glucose regulation, and waste elimination. Its proper functioning is crucial for the overall health and well-being of mammals.