Which of the following statements about x-rays is NOT true?
a. They travel at the speed of light.
b. They are invisible.
c. They have no mass.
d. They travel in convergent lines.
d. X-rays travel in divergent lines.
Health Professions
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Rescue breaths are also called _______
a. respirations c. dilations b. inspirations d. ventilations
Health Professions
Which cartridge has a green band in the required ADA color-coding system?
A) 3% mepivacaine plain B) 4% prilocaine, 1:200,000 epinephrine C) 2% lidocaine plain D) 2% lidocaine, 1:50,000 epinephrine
Health Professions