Hi, visitor! Register | Login |  | Facebook

Stomach

Kids Learning

Stomach

Stomach

Our stomach is a fascinating part of our body. Learn about the way it works.

How come the stomach digests everything that we eat, but it does not digest itself? Luckily for us, a living stomach has ways to protect itself from itself! To carry it through a day’s meals, the stomach produces about six cups of digestive juices. A key ingredient of this digestive juice is extremely corrosive hydrochloric acid. Drop some zinc into a cup of digestive juice, and the acid would gradually dissolve the metal. (Which isn’t surprising if you’ve ever been sick and vomited: that burning in your throat is caused by acid ejected from your stomach). In spite of carrying such a vicious reagent in our stomachs, how do we remain unharmed?

To get our answer, let’s first understand –

a) What does the stomach do?

The stomach as you know is a part of our digestive system. It has been assigned the duty of breaking down the food that we eat into simpler forms. After this, the food goes into the intestines to be absorbed by the body to give us energy.

b) How does the stomach break down the food?

This is accomplished with the help of the contractions of the muscles and some digestive juices. These juices called gastric juices are produced within the stomach. The food chewed and swallowed by us, reaches the stomach. Here it mixes with the gastric juices and gets digested.

What is gastric juice?

Gastric juice or gastric acid is the digestive juice secreted by the lining of our stomachs. It is mainly composed of hydrochloric acid, 2 protein digesting enzymes (pepsin and rennin) and mucus. The enzymes are relatively harmless, but hydrochloric acid is extremely strong and can dissolve tissue in hours. Mucus is a protective slime. All these are secreted by special types of cells present in the lining of the stomach called epithelial cells. Of the epithelial cells lining the stomach, the majority are mucous glands.

What does the trick?

Just as human beings use fire, the body has evolved ways to harness useful-but-threatening chemicals without harming itself. The stomach lining not only produces the acid, fluids, and other chemicals needed to break down the food you eat, it also produces special cells to protect itself from being digested. The epithelial cells which secrete mucus protect the stomach from the acid.

They act in two ways.

Firstly, the stomach’s lining of epithelial cells continuously regenerate themselves and are replaced every three days. So cells underneath remain protected from the harsh environment of the churning stomach sac.

Secondly, mucus made by the epithelial cells forms a thick lining on the inner stomach wall and acts as a barrier for the stomach lining against noxious acid. While stomach juices eat through, mucus is continuously replenished. An empty stomach can weigh 1 pound or more and 38% of this is slippery mucus.

Now the question arises–Can this lining never be breached? It can sometimes, when the body’s defenses fail. Then the underlying tissue can indeed be damaged as the acid tries to digest it. This can make painful sores in the stomach wall called ulcers.

So eat good food and help your stomach in protecting itself and keeping you healthy.

Spread the love

No Tags

1998 total views, 1 today

  

Fashion for Kids

The views/information presented on this page is solely of the poster/author and in no way the company running this website is responsible for the same.

Leave a Reply

You must be logged in to post a comment.

  • Modelling Agency for Kids

    Kids Modelling Agency

    by on March 22, 2024 - 0 Comments

    Kids modeling agency is a company that represents kids talent, child models, kid models, toddlers, babies, pre teen models, teen models to work for the fashion, advertising and modelling industry. A child model or a kid model refers to a child who is employed to advertise , display and promote commercial products or to serve […]

  • Physics in Pendulum Ride

    by on May 21, 2024 - 0 Comments

    Gathering some knowledge of science while you are on your best ride can be more interesting. If you will know the physics behind your favorite ride, you will enjoy the ride more and can impart your knowledge to your friends. Isn\’t it? Remember about the swings that you often enjoy riding in your home, park […]

  • African Baby Girl Names

    by on April 1, 2024 - 0 Comments

    ou can find here best African babynames, African baby girl names, African female names with their meanings. This could be useful if you are planning to name your new born girl.   African Baby Girl Names Name Meaning Aba Born on Thursday Abayomi Come to Bring Joy Abebi We asked and we got her Abeo […]

  • African Baby Boy Names

    by on April 6, 2024 - 0 Comments

    African Baby Boy Names : African male kids names with their meanings. These are popular African baby boy names with their meanings. Name Meaning Afram A River in Ghana, Africa Abdalla Servant of God Abdul Servant of the Lord Abedi Worshipper Abiola Born in Honor Baakir Eldest Babu Grandfather Badrani Full Moon Bello Helper Chacha […]

  • Video Games

    by on May 6, 2024 - 0 Comments

    Today video games are becoming popular among kids. Parents either install a gaming system or load some games in their own PCs. Kids can have a great time with these video games. Delaware St John volume 3: The Seacliff Tragedy is the game about third outing for psychic detective Delaware St John sees him trying […]

Blog Categories