What is immune system

what is immune system?

Hii visitors,What is immune system?Our immune system is a complex network of biological structures like cell, tissue and organs. They togetherly protects our body against the disease and fighting against the viruses germs and the pathogens causing diseases.


When large variety of harmful germs like pathogens, from viruses to parasitic worms enter our body the cause disease and they grow and multiply in very less time.Now the function of the Immune system comes in. To fight against that viruses germs and keep us away from the disease .

Type of immune systems.

  • Innate immunity
  • Active immunity
  • Passive immunity

Innate immunity:-

The type of immunity which is acquire by birth into our body or at the time when the antigen appeared in our body. The immunity which is present inside us by birth and help us to fight against the pathogens germ and viruses. It includes chemical barrier like blood and physical barrier like skin.This barrier like blood skin and immune cells attack on the foreign particles like pathogens and kill them and resist body against them.The innate immune system comes in work when antigens are appeared in to the body.

Active immunity:-

When the body is expose to different disease causing agent, the cell, create antibodies that helps to destroy or kill the disease causing agent. This active immunity takes days or weeks to respond against the pathogens and disease causing agent but this response is the long lasting response.

Passive immunity:-

The passive immunity performs its functions when the antibodies are given externally and which are ready made for a disease to resist it. They are not in built in our body. It is created outside the body. Passive immunity of a newborn baby come from mother through placenta.

The body parts involved in the immune system.

  • Skin
  • Mucous membrane
  • Inner linings of some organs and body cavities.
  • White blood cells
  • Organs and tissues like
  • Thymus
  • Spleen
  • Tonsils
  • Lymph nodes
  • Lymph vessels
  • Bone marrow. They produce, store, and carry white blood cells.

How does immune system works.

  • 1:- Immune system’s function is to resist body against the diseases are the pathogens harmful particles which cause diseases.
  • 2:- This substance known as antigens.
  • 3:-When this antigen centre in our body the body organise or identify the type of antigen inter into our body and start forming the the antibodies against it.
  • 4:- Antibody is formed into our body.
  • 5:-Then antibodies attack on the weeker pathogens and kill them or destroy them.

If this antigens again enters in our body then the body remember the antibodies formed last time when these antigens had firstly enter into our body and then again it releases those antibodies and kills the antigens and resist a body against the diseases.

How to build stronger immunity?

As we know for healthy body and also for a proper immunity we should take proper diet which you may call it as a balanced diet. Which include all type of nutrients like vitamins, minerals, carbohydrates, fats, etc, which are required daily for our body, but for stronger immunity we should take the balance diet as well as the most important thing is we should consume vitamin c in more amount which plays a key role in in building immunity and also for making immunity strong.


We can also includes small things into our diet which are the source of vitamin c and also helps to build a strong immunity such as egg, nuts, oats, meat, etc and other food materials which are the rich source of vitamin c. The proper intake of vitamin c in proper quantity is also important. One can also consume fruits such as kiwi, mango, papaya, lemon, strawberries, watermelon, etc and the diet which includes rich vitamin c content cause vitamin c plays an important role in building the immune system more stronger.

Thank you.

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