A patient has developed a decubitus ulcer on the coccyx. What defense mechanism is most affected by this homeostatic change?
A) The mucous membrane is affected.
B) The respiratory tract is affected.
C) The skin is affected.
D) The gastrointestinal tract is affected.
C
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The body's primary external defense mechanism is intact skin. The development of a decubitus ulcer allows for entry of microbial growth. The mucous membranes, respiratory tract, and gastrointestinal tract are not affected primarily.
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