Question

Mention the type of immunological barrier to which skin belongs.

• A. Anatomical barrier
• B. Physiological barrier
• C. Phagoytic barrier
• D. Inflammatory barrier

Answer 1

Answer: (A)

Anatomical barrier

The immune system provides both the types of immune response innate and acquired immune responses. There are various types of an immunological barrier such as:

(i) An anatomical barrier such as skin. It is called as the first line of defence because they provide the first and primary protection from infection.

(ii) Physiological barriers such as pH of the stomach, bile juice, saliva and tears.

(iii) Cellular barriers such as leucocytes, macrophage cell (phagocytic barrier) and cytokine barrier (inflammatory barrier).

So, Option A is correct.