Question

name 5 gastric juices in stomache

Answer 1

In addition to the mechanical digestion caused by churning, there is also chemical digestion happening within the stomach. Specifically, we see the chemical digestion of proteins by digestive fluids. These acidic digestive fluids that are secreted by the gastric glands in the mucous membrane of the stomach are collectively referred to as gastric juices. involuntary nervous system increases secretions when activated by the sight, smell or physical presence of food in the digestive tract. In addition, the presence of food and the change in the pH of the stomach stimulate the release of a hormone called gastrin. This is a hormone secreted by glands in the mucous membrane of the stomach that stimulates the production of gastric juices.

Five types of Gastric guices are
1.Chief cells
2.Pespin
3.Pariental cells
4.Peptic Ulcers
5.Chyme
Chief Cells and Pepsin

When we look closely at the gastric glands, we see that they are lined by epithelial cells. There are several different types of cells within the glands, and they secrete different products. One of the important products of gastric juice that is secreted by these cells is pepsin. Pepsin is the chief digestive enzyme in the stomach that breaks down proteins. You can think of pepsin as the 'chief' digestive enzyme in the stomach because it is produced by the chief cells. This can help you remember the term, but I should clarify that pepsin is the active protein-digesting enzyme. The chief cells actually produce pepsinogen (an inactive form of pepsin).

It is an interesting fact that many enzymes in the digestive system are initially produced in their inactive form. We previously learned that an inactive form of an enzyme is called a zymogen. Zymogens, like pepsinogen, must be activated before they can actually perform their duty. So, you might be wondering why your digestive system would go through the extra step of producing an inactive form of an enzyme? Well, the answer becomes clear if we think about a chief cell that produces the inactive pepsinogen. The chief cell itself contains many proteins. So, if the chief cell directly produced the protein-digesting enzyme, pepsin, it would actually eat itself.

HCl allows pepsinogen to convert to pepsin within the stomach

Parietal Cells and HCl

Once the inactive pepsinogen is secreted by the chief cells, it's inside the stomach. And it needs to be converted to its active form, pepsin, before it can work to break down the proteins in your stomach. To do this, we need hydrochloric acid (HCl), which is a very strong acid. The presence of hydrochloric acid creates an acidic environment in your stomach that is needed to convert pepsinogen to pepsin. Hydrochloric acid is produced right in your stomach, and the gastric glands contain specialized epithelial cells called parietal cells that produce hydrochloric acid.

Peptic Ulcers

So, you might be thinking it could be dangerous to have hydrochloric acid in your stomach. And you'd be right if it wasn't for the fact that your stomach's epithelial cells are constantly producing a sticky alkaline mucus, which clings to the stomach lining and protects the stomach from the corrosive acid. This system works perfectly in a normal healthy body, but if the protective lining stops working correctly and the lining breaks down, the result can be a peptic ulcer. A peptic ulcer is a lesion of the mucosa. When this protective lining stops working, the digestive system cannot defend itself against the digestive action of pepsin, and you end up with a 'peptic' ulcer. The most common locations for peptic ulcers are in the last part of the stomach or the first section of the small intestine.

Answer 2

Hey there,
The pancreas secretes pancreatic juice which contains enzymes like trypsin for digesting proteins and lipase for breaking down emulsified fats.The walls of the small intestine contains glands which secrete intestinal juice.The enzymes present in it finally convert the proteins to amino acids,complex carbohydrates into glucose and fats into fatty acids and glycerol.


Hope this helps u!