or (4) which part of digestive tract or alimentary canal contain gastric gland ? name the gastric juices and state one function of each of them
Answers
Answer:
There are three types of gastric glands, distinguished from one another by location and type of secretion. The cardiac gastric glands are located at the very beginning of the stomach; the intermediate, or true, gastric glands in the central stomach areas; and the pyloric glands in the terminal stomach portion. Both the cardiac and pyloric glands secrete mucus, which coats the stomach and protects it from self-digestion by helping to dilute acids and enzymes.
The intermediate gastric glands produce most of the digestive substances secreted by the stomach. These glands are narrow tubules composed of three major cell types: zymogenic, parietal, and mucous neck cells. At the base of the gland are the zymogenic (chief) cells, which are thought to produce the enzymes pepsin and rennin. (Pepsin digests proteins, and rennin curdles milk.) Parietal, or oxyntic, cells occur throughout the length of the gland and are responsible for the production of hydrochloric acid, which is necessary to activate the other enzymes. The purpose of mucous neck cells is to secrete mucus.
Answer:
Gastric glands are mostly exocrine glands and are all located beneath the gastric pits within the gastric mucosa–the mucous membrane of the stomach. The gastric mucosa is pitted with innumerable gastric pits which each house 3-5 gastric glands.
Explanation:
HCL hydrochloric acid is the gastric juices that helps in killing germs and harmful bacteria and also it in activating pepsinogen. pepsinogen is an another gastric juices which when activated produces pepsin. and pepsin for the breakdown proteins into amino acids.