DMPQ: What is immunity? Explain the types of immunity?

Immunity is the ability of the body to fight against infectious agents. The immunity can be classified as innate immunity and acquired immunity.

1. Innate immunityis a non-specific type of defense mechanism.  It has four types:
2. i) Physical barrier: Example, skin covering of the body, secretion of mucous in the respiratory tract

ii)Physiological barrier: Example, acid in the stomach, tears from the eyes

iii) Cellular barrier: Example, monocytes and lymphocytes in blood

1. Cytokine barrier: Example, interferon
2. Acquired immunity:it is a specific type of defence mechanism. It shows two types of responses: primary response and secondary response. It involves two types of lymphocytes – 

• B lymphocytes: Show humoral immune response (HI)
• T lymphocytes: Show cell mediated immunity (CMI)

 

TNPSC  Notes brings Prelims and Mains programs for TNPSC  Prelims and TNPSC  Mains Exam preparation. Various Programs initiated by TNPSC  Notes are as follows:-

• TNPSC  Mains Tests and Notes Program
• TNPSC  Prelims Exam 2020- Test Series and Notes Program
• TNPSC  Prelims and Mains Tests Series and Notes Program
• TNPSC  Detailed Complete Prelims Notes

For any doubt, Just leave us a Chat or Fill us a querry––