Each quadrant of the adult mouth holds ___ incisors, ___ canines, ___ premolars, and ___ molars.

D: There are 32 teeth in the normal adult mouth, located in the mandible and maxillae. The teeth can be divided into quadrants: right upper, left upper, right lower, and left lower. In adults, each quadrant contains one central and one lateral incisor; one canine; first and second premolars; and first, second, and third molars.