The body's first-line barrier defense is considered to be what?
A) Mast cells
B) Mucous membranes
C) Skin
D) T cells
C
Feedback:
The skin is the first line of barrier defense. It acts as a physical barrier to protect the internal tissues and organs of the body. Mast cells are part of cellular defense. They are found in the respiratory and GI tracts and are fixed basophils that do not circulate. Mucous membranes are a barrier defense that line the areas of the body that are exposed to external influences but do not have the benefit of skin protection. T cells are part of the immune response and provide cell-mediated immunity. Activation of a T cell by a non–self-cell results in responses that destroy foreign cells.
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After teaching a client how to care for a furuncle in the axilla, a nurse assesses the client's understanding. Which statement indicates the client correctly understands the teaching?
a. "I'll apply cortisone cream to reduce the inflammation." b. "I'll apply a clean dressing after squeezing out the pus." c. "I'll keep my arm down at my side to prevent spread." d. "I'll cleanse the area prior to applying antibiotic cream."
In which situation may the nurse legally use restraints?
a. The patient states he wants to get out of bed, but the doctor has ordered bed rest. b. The patient keeps asking for help to go to the bathroom and the nurse is very busy. c. The newly admitted patient is confused as to the location of his bathroom. d. The patient who is critically ill becomes violent and is removing IV lines and medical monitoring devices.
Hydrocephalus is usually treated with:
a. Drugs b. Behavior therapy c. Physical therapy d. A shunt
The nursing assistant receives her assignment from a ____________________.
Fill in the blank(s) with the appropriate word(s).