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  • What is the third line of defense in the immune system?  Option: 1 Lymphocytes like B- and T-cells<

What is the third line of defense in the immune system?
 

Option: 1

Lymphocytes like B- and T-cells


Option: 2

Physical barriers like the skin and antiviral compounds it produces


Option: 3

Macrophages and dendrites


Option: 4

Interferon proteins that induce fever


Answers (1)

best_answer

 

 

As learnt in Immune Response & Lines of Defence -

There are three lines of defence in the body:

  • First line of defence: It includes physical barriers and physiological barriers of innate immunity.
  • Second line of defence: It includes cellular barriers and cytokine barriers of innate immunity
  • Third line of defence: It includes acquired immunity.

Since, B- and T-cells are the components of acquired immunity, they form the third line of defence. 

Hence, the correct answer is option a.
 

Posted by

Pankaj

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