Dictionary > Gastric juice

Gastric juice

Definition
noun
The acidic digestive fluid secreted by various glands in the stomach lining into the lumen of the stomach, primarily for the partial digestion of food as well as the eradication of many pathogenic microbes that have concurrently entered by way of the oral cavity
Supplement
The gastric juice is a body fluid that aids in the digestion of food. Nevertheless, it is just one of the various digestive juices secreted in the body to aid in food digestion. It is made up of hydrochloric acid, potassium chloride, sodium chloride, pepsinogen and other digestive enzymes, intrinsic factor, gastrin, mucus, and bicarbonates. It has a pH ranging from 1 to 2. Its low pH is essential in activating many digestive enzymes and in destroying various pathogens. The gastric juice also contains bicarbonates to neutralize the acid and thereby regulate the pH level in the stomach. Mucus is also produced to serve as a barrier to prevent the gastric acid from damaging the stomach and to inhibit the digestion of the stomach itself.
The gastric juice is secreted by various glands in the stomach:
(1) fundic glands, the glands located in the fundus and body of the stomach that secrete hydrochloric acid and intrinsic factor
(2) cardiac glands, the glands in the cardia of the stomach that secrete primarily mucus
(3) pyloric glands, the glands in the antrum of the pylorus that secrete gastrin
These glands are housed in the gastric pits, which in turn are located in the gastric mucosa of the stomach.
Mentioned in:


You will also like...

Ecological Research Measuring & Analysis
Ecological Research: Measuring & Analysis

This lesson is about the methods used for ecological research, such as quadrat and transect sampling, canopy fogging, an..

IQ, Creativity and Learning
IQ, Creativity and Learning

Human intelligence provided the means to utilize abstract ideas and implement reasoning. This tutorial takes a further l..

Population Regulation in an Ecosystem
Population Regulation in an Ecosystem

With regard to the population size of a species and what factors may affect them, two factors have been defined. They ar..

temperature - abiotic factor
Abiotic and Biotic Factors

This tutorial deals with the abiotic factors of the freshwater environment that determine what sort of life would be sui..

Non-Mendelian Inheritance
Non-Mendelian Inheritance

In this tutorial, find out more about certain types of inheritance that does not follow the Mendelian inheritance patter..

Balanced Diet
A Balanced Diet – Minerals and Proteins

Proteins and minerals can be derived from various dietary sources. They are essential for the proper growth and developm..