Physiology Textbooks Boundless Anatomy and Physiology Digestive System The Liver
Physiology Textbooks Boundless Anatomy and Physiology Digestive System
Physiology Textbooks Boundless Anatomy and Physiology
Physiology Textbooks
Physiology
Concept Version 11
Created by Boundless

Histology of the Liver and Gallbladder

Hepatocytes are the main tissue cells of the liver; the gallbladder contains the mucosa, muscularis, perimuscular, and serosa layers.

Learning Objective

  • Describe the layers of the gallbladder and the histology of the liver

Key Points

    • A hepatocyte is the main tissue cell of the liver, making up 70-80% of the liver's cytoplasmic mass.
    • Hepatocytes contain large amounts of rough endoplasmic reticulum and free ribosomes.
    • Hepatocytes are involved in protein synthesis; protein storage; transformation of carbohydrates, synthesis of cholesterol, bile salts and phospholipids; and detoxification, modification, and excretion of exogenous and endogenous substances.
    • Hepatocytes are unique in that they are one of the few types of cell in the human body that are capable of regeneration.
    • There are several different layers of the gallbladder: the mucosa (epithelium and lamina propria), the muscularis, the perimuscular, and the serosa.

Term

  • hepatocyte

    Any of the cells in the liver responsible for the metabolism of protein, carbohydrate, and lipid and for detoxification.

Full Text

The Liver

A hepatocyte is the main tissue cell of the liver, making up 70-80% of the liver's cytoplasmic mass. Hepatocytes contain large amounts of rough endoplasmic reticulum and free ribosomes. Hepatocytes are involved in protein synthesis, protein storage, transformation of carbohydrates, synthesis of cholesterol, bile salts and phospholipids, and detoxification, modification, and excretion of exogenous and endogenous substances. The hepatocyte also initiates formation and secretion of bile. Hepatocytes are organized into plates separated by vascular channels (sinusoids) for blood vessels. The hepatocyte plates are one cell thick in mammals.

Hepatocytes

Cross-section of human liver showing hepatocytes.

Hepatocytes are unique in that they are one of the few types of cell in the human body that are capable of regeneration. Hepatocytes are derived from hepatoblasts, the precursor stem cell of the liver, which divides to produce new hepatocytes. The liver is capable of complete regeneration from as little as 25% of the original organ.

[ edit ]
Edit this content
Prev Concept
Anatomy of the Liver
Blood Supply to the Liver
Next Concept