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Natural immunity barriers Example A. Cellular barrier 1. Natural Killer B. Physiological barrier 2. Interferons C. Cytokine barrier 3. skin D. Physical barrier 4. Tears from eyes

Options

  1. AA-4;B-1;C-2;D-3
  2. BA-1;B-2;C-4;D-3
  3. CA-1;B-4;C-2;D-3
  4. DA-1;B-4;C-3;D-2

Correct answer

C. A-1;B-4;C-2;D-3

Step-by-step solution

Cellular barrier: Natural Killer (NK) cells are part of the immune response that provides a cellular barrier against infections. Physiological barrier: Tears from the eyes contain lysozyme, which acts as a physiological barrier to prevent infections. Cytokine barrier: Interferons are cytokines that provide a barrier by interfering with viral replication in infected cells. Physical barrier: The skin acts as a physical barrier, preventing pathogens from entering the body.

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