Question

What are the functions of Immune System ? Write in points .. ​

Answer 1

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Functions of immune system are :-

• to fight disease-causing germs (pathogens) like bacteria, viruses, parasites or fungi, and to remove them from the body,

• to recognize and neutralize harmful substances from the environment, and.

• to fight disease-causing changes in the body, such as cancer cells.

Answer 2

Answer:

The major function of the immune system is to protect the host from environmental agents such as microbes or chemicals, thereby preserving the integrity of the body.

This is done by the recognition of self and response to non-self. The immune response has been artificially divided into innate immunity (resistance) and specific immunity.

Specific immunity is further divided into humoral immunity, the one involved with antibody, and cellular immunity, which is orchestrated by T cells. It is essential to understand that although these divisions have helped in understanding and analyzing the immune response, the system functions as a single unit rather than as a separate entity.

In this paper, a simplified analysis of specific immunity will be given. However, the importance of nonspecific immunity, especially as it pertains to its role in preventing exposure of environmental substances, should not be forgotten.