Question

Help please!! :-)
1) What is the difference between chemical, physical, and biological barriers? (use examples)
2) A patient has second degree burns over most of the left lower limb and the posterior right lower limb. Applying the rule of nines, is the patient critically burned? Explain.

Answer 1

Chemical barriers destroy pathogens on the outer body surface, at body openings, and on inner body linings. Sweat, mucus, tears, and saliva all contain enzymes that kill pathogens. Urine is too acidic for many pathogens, and semen contains zinc, which most pathogens cannot tolerate. In addition, stomach acid kills pathogens that enter the GI tract in food or water.

Answer 2

Biological barriers are living organisms that help protect the body. Millions of harmless bacteria live on the human skin. Many more live in the GI tract. The harmless bacteria use up food and space so harmful bacteria cannot grow.

Answer 3

Physical Barriers

The first line of defense against disease

Answer 4

i can really find examples about Physical Barriers

Answer 5

but i hope some of this helps :)

Answer 6

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