[Biology Class Notes] on Gastric Mucosa Pdf for EXAM

Our stomach is one of the most complex mechanisms of our body. It comprises so many acids, layers, and naturally occurring chemicals which are very important to carry out the function of digestion. One of these crucial components is gastric mucosa. This mucus is stored in the inner lining of our stomach. This category of stomach mucus is stored by the tall columnar epithelial cells. If this mucus is not stored in proper levels in our body then it can lead to several stomach and digestive issues. The storage of this mucus is properly maintained only after having a proper diet. 

What is the Function of the Mucus in the Stomach? 

This mucus falls in the category of glycoprotein which performs several functions to complete the process of digestion. Some of these crucial functions are- 

1. Food Lubrication

One of the most important roles of the gastric mucosa is the lubrication of the food to facilitate the ease of passage in the stomach. The food that we eat needs to be in a proper state to have a proper excretory passage. If it is not properly lubricated then it can lead to several issues in our intestines as well as stomach. 

2. Protective Layer

The tall columnar epithelial cells of the stomach mucosa provide a protective layer to the stomach. This protective layer helps in avoiding damage to the main layer of the stomach. We have always come across incidents of stomach damage, this happens due to the lack of gastric mucosa in the stomach. 

Composition of Stomach Mucus

Several chemicals are involved in the process of digestion. Specifically talking about the stomach mucus, then there are primarily five types of cells. 

1. Gastrin Cells

These cells are known as G cells which are mainly located in the area of the antrum. These cells as the name suggest consist of the digestive hormone known as gastrin which helps in enhancing the growth of gastric motility and HCL secretion. 

2. Zymogenic Cells

These cells are primarily present in the gastric glands of the body. They have pepsinogen, from which the digesting protein enzyme pepsin is formulated. 

3. Mucoid Cells

These are the main cells that are present in all the gastric glands and are primarily responsible for the formation of the gastric mucosa. These cells are present in most parts of the stomach. Right from the stomach neck to fundic parts. 

4. Endocrine Cells

These are the cells known to be secreted by the enteric endocrine system. These cells are mainly known to be the reason behind gastric acid secretion. 

5. Oxyntic Cells

Also known as parietal cells are mainly responsible for secreting hydrogen ions and chloride ions which in turn leads to the formation of HCL that is the most important part of the digestive process. The lack of HCL in the stomach leads to several severe stomach issues and always causes issues in the digestive system of the body. 

These cells are a proper description of the role of mucus in the stomach. A very minute discrepancy can also lead to several unwanted circumstances in our bodies. 

Final Overview

The true core of the energy formation in our body lies with the stomach. Not only gastric mucosa but every other component of the stomach is very vital for our body to carry out the processes in an efficient and effective manner. As already mentioned, any issue with any of the components can lead to drastic effects on our bodies. 

Not only our digestion, but these cells are also actually responsible for all the other bodily processes of our body. We all know that all the processes of our body are interconnected and thus not a single thing can be stored. But why stomach health is so important is because it is in our hands as to what we eat to maintain our body. 

Doctors have always pointed out that the whole body’s health depends on what we eat. If we eat proper healthy food at the proper time then our body is going to be healthy and vice versa. A healthy diet in fact is the most important factor for maintaining the proper levels of cells that are mentioned above. 

Did You Know? 

The stomach doesn’t need gravity to help the food to reach down, you can even eat food while being upside down. The muscles comprising the esophagus create their own energy by the wavelike motions that help the food reach the stomach without the help of gravity. Although it is never recommended to eat your food upside down. 

You should always take your meal in a proper posture without any distraction. A proper posture is the healthiest way to take your meal.  Plus, it is very difficult to eat food upside and you may end up throwing up some of your food if you try that.