Patient Care Technician Certification (PCTC) Terminology Practice Test

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Which term refers to the amount of space a drug occupies?

Volume

Volume is the amount of space a substance occupies. In pharmacology, this term is used to describe how much space a drug fills, especially for liquids measured in milliliters. Mass is the amount of matter in an object (kept in grams), weight is the force of gravity on that mass, and density is the amount of mass per unit volume (how tightly packed the matter is). Since the question asks for the measure of space a drug takes up, volume best fits.

Mass

Weight

Density

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