X-rays originate at the:
a. cathode.
b. port.
c. focusing cup.
d. focal spot.
d. When the high-velocity electrons are stopped or slowed as they collide with the tungsten atoms in the target, at the focal spot, the result is the production of general radiation (bremsstrahlung) and/or characteristic radiation.
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Which of the following methods would MOST often be used for protecting contents in a fire incident?
A. Gathered and placed in an adjacent structure B. Gathered and placed outside and covered with minimal salvage covers C. Gathered into large piles to be covered with one large salvage cover D. Gathered into compact piles to be covered with minimal salvage covers
____ are poisonous substances that are produced by living organisms, such as plants, animals, bacterium, or fungi.
A. Irritants B. Toxins C. Asphyxiants D. Viral agents
Which of the following vitamins is needed for protein synthesis?
A. Vitamin A B. Vitamin B6 C. Vitamin D D. Vitamin E E. Vitamin K
The neck muscle that is responsible for moving the head backward and laterally is the ____________
a. sternocleidomastoid b. platysma c. trapezius d. none of the above