What Is An Immune System?
Every day we are confronted with a large number of pathogens. But only a few of these cause us disease. Most of our body is protected against this antigen.
The immune system has the ability to fight against such pathogens.
On this day you need to increase your immunity.
There are two types of immunity.
(1) Non-Specific innate immunity,
(2) Specific innate immunity,
A) Non-specific innate immunity
Non-specific immunity is indefinite protection that is present at birth. This resistance is achieved by creating various types of barriers against the entry of external factors into our bodies.
There are four types of barriers to this resistance.
(i) Physical barrier: Our skin is the main physical barrier, which prevents the entry of micro-organisms. The lining of the connective tissue lining the respiratory tract, gastrointestinal tract, and urinary tract also helps prevent germs from entering the body.
(ii) Physiological obstruction: Acids in the stomach, saliva in the mouth, tears in the eyes, etc. inhibit the growth of pathogens.
(iii) Cellular Obstruction: Some of the white blood cells (WBCs) in our body such as polymorphous leukocytes (PMNL neutrophils) and monocotyledonous cells as well as the type of cytoplasm in the blood Can destroy.
(iv) Cellular barrier: Infected cells secrete a protein called interferon which protects other non-infected cells from viral infection.
B) Non-specific innate immunity (Acquired immunity)
Acquired immunity is specific to memory-based. This means that our body responds first when it comes in contact with a pathogen. Which is called the primary response to an inferiority complex. It then gives a second or memory-based irregular response of high intensity when confronted with the same pathogen. Which means our body has a memory of the first attack. Primary and secondary reactions are caused by two types of lymphocytes present in our blood: B-lymphocytes, T-lymphocytes. B-cells create an army of proteins in our blood at the time of pathogen resistance.
So that it can fight pathogens. This protein is called an antibody. T-cells do not produce antibodies. But help in the formation of antibodies. The molecular structure of each antibody consists of four polypeptide chains - two small light chains and two heavy chains in the form of H2L2. Our body produces different types of antibodies - IgA, IgM, IgE, IgG, etc.