Introduction to Medical Terminology Practice Test

Ad- is the prefix that means toward, to, near. It indicates movement toward a point or location. For example, adduction describes moving a limb toward the midline of the body, and adrenal refers to glands located toward the kidney. In contrast, dextr/o means right, sinistr/o means left, and post- means after or behind, so they don’t convey the idea of moving toward or being near a location.