Mucous membrane

Definition

A mucous membrane is a moist tissue layer that lines various cavities in the body and covers internal organs. It secretes mucus, which is crucial for protection against infection and for keeping the tissue moist.

Related terms

Epithelial Tissue: The type of tissue that forms the outer layer of the body’s surfaces, lines internal cavities, and composes glands.

Mucus: A thick, slippery substance produced by mucous membranes that lubricates and protects them.

Goblet Cells: Specialized epithelial cells that produce mucus found within the mucous membranes