Structure of liver

 The liver is a large, reddish-brown organ located in the upper right side of the abdomen, just below the diaphragm. It is the largest internal organ in the human body and performs numerous vital functions. The structure of the liver can be described as follows:

1. Lobes: The liver consists of two main lobes, the right lobe and the left lobe. The right lobe is larger than the left lobe and occupies most of the space in the upper abdomen.

2. Lobules: Each lobe is composed of thousands of tiny functional units called lobules. Lobules are hexagonal in shape and are roughly 1-2 mm in diameter.

3. 
   
   

   
   

4. Hepatocytes: The lobules are made up of hepatocytes, which are the primary functional cells of the liver. Hepatocytes play a crucial role in the liver's metabolic and synthetic functions.

5. Hepatic Portal System: The liver receives blood from two main sources: the hepatic artery and the portal vein. The hepatic portal vein carries nutrient-rich blood from the digestive organs to the liver for processing and detoxification.

6. Bile Ducts: Bile, a substance produced by the liver, is responsible for the digestion and absorption of fats. Bile ducts carry bile from the liver to the gallbladder for storage or directly to the small intestine for digestion.

7. Gallbladder: While not part of the liver itself, the gallbladder is closely associated with the liver. It stores and concentrates bile produced by the liver, releasing it into the small intestine when needed.

8. Blood Supply: The liver has a rich blood supply to facilitate its numerous functions. In addition to the hepatic portal vein and hepatic artery, the liver is drained by the hepatic veins, which carry deoxygenated blood back to the heart.

9. Connective Tissue: The liver is enveloped in a connective tissue capsule called Glisson's capsule, which provides structural support and protection.

The intricate structure of the liver allows it to perform essential functions such as detoxification, metabolism of nutrients, production of bile, storage of vitamins and minerals, and synthesis of important proteins. Its unique ability to regenerate also enables it to recover from certain types of damage and injury.