QUESTION 1 1 poit Which of the following is one of the body\'s first lines of de

Question

QUESTION 1 1 poit Which of the following is one of the body's first lines of defense against infection? O antibodies O obstacles such as skin and mucous membranes increased production of certain hormones inflammation decreased heart rate QUESTION 2 1 poin Which of the following is a response of our innate defense system? inflammation adaptive defenses cytotoxic t cell response helper T cell response O antibody mediated response QUESTION 3 0.5 poir T -cells can only recognize antigen in fragments displayed by self-proteins (MHC markers) True O False

Explanation / Answer

Answer for question number 1 : The correct option is B (obstacles such as skin and mucus membranes.

Explanation : These are the nonspecific barriers to microbial invasion of the body which includes the skin, phagocytic cells, and various chemicals form the first line of defence. These barriers block the entry of microorganisms into the body and seek out and destroy microorganisms that have entered the body.

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