Gastric mucosa
Gastric Mucosa
The Gastric Mucosa (pronounced: gas-trik myoo-koh-suh) is the mucous membrane layer of the stomach which contains the glands and the gastric pits. In humans, it is about 1 mm thick and its surface is smooth, soft, and velvety. It consists of simple columnar epithelium, lamina propria, and the muscularis mucosae.
Etymology
The term "Gastric" is derived from the Greek word "gaster" meaning "stomach", and "mucosa" is derived from the Latin "mucosus" meaning "slimy, moldy, or mucous".
Function
The gastric mucosa secretes 2 liters of gastric juice per day. Gastric juice is a mixture of water, electrolytes, mucus, enzymes, and intrinsic factor. The gastric mucosa also secretes a mucus that aids in the protection of the stomach lining from the acid environment.
Related Terms
- Gastric Juice: The secretions of the gastric mucosa necessary for digestion.
- Gastric Pits: Indentations in the stomach which denote entrances to the gastric glands.
- Gastric Glands: They are located in gastric pits and produce the majority of the digestive substances for the stomach.
- Epithelium: It is the thin tissue forming the outer layer of a body's surface and lining the alimentary canal and other hollow structures.
- Lamina Propria: A thin layer of loose connective tissue which lies beneath the epithelium and together with the epithelium constitutes the mucosa.
- Muscularis Mucosae: A thin layer of smooth muscle found in most parts of the digestive tract, separating the mucosa from the submucosa.
External links
- Medical encyclopedia article on Gastric mucosa
- Wikipedia's article - Gastric mucosa
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