An allergic skin reaction that occurs as a result of direct exposure of the skin to a particular allergen is:
a. contact dermatitis
b. angioedema
c. urticaria
d. laryngeal edema
a. contact dermatitis
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Which cranial nerve releases a neurotransmitter that can decrease the pulse rate?
A) Vagus B) Hypoglossal C) Trochlear D) Abducens
The minimum audible frequency for humans is considered to be approximately ____________________ Hz
Fill in the blank(s) with correct word
When adding solutions to a sterile field, pour:
A) A small amount into a waste receptacle first to cleanse the lip of the bottle B) By resting the neck of the bottle against the sterile container to prevent splashing C) Carefully and rapidly to avoid drips D) From at least 8 inches above the container to be filled E) From at least 10 inches above the container to be filled
Dental film has a polyester base for the purpose of
A) increasing the contrast and image quality. B) providing support for the emulsion. C) producing the latent (invisible) image. D) preventing scatter radiation from exposing the film.