. Human physiology. (Lat. bis, twice ; and cuspis, apointed extremity), so called because each has two cusps or ridgeson the top of the crown, separated by a furrow. Beyond theseagain are larger teeth, each possessing two or more fangs, andhaving a very broad and irregular surface well adapted for thegrinding of foods ; hence these teeth are called the molars (, a mill). A child of about six years possesses twenty teeth, called thetemporary or milk teeth. These consist of four incisors in thefront of each jaw, a single canine tooth on each side of these incisors, and a pair of molars o
. Human physiology. (Lat. bis, twice ; and cuspis, apointed extremity), so called because each has two cusps or ridgeson the top of the crown, separated by a furrow. Beyond theseagain are larger teeth, each possessing two or more fangs, andhaving a very broad and irregular surface well adapted for thegrinding of foods ; hence these teeth are called the molars (, a mill). A child of about six years possesses twenty teeth, called thetemporary or milk teeth. These consist of four incisors in thefront of each jaw, a single canine tooth on each side of these incisors, and a pair of molars on each side beyond the canines. At 88 ELEMENTARY PHYSIOLOGY the age of about seven years thesa milk teeth begin to be cast off,their places being taken by the permanent teeth which grow them ; and, at about the age of twelve, all have in this waygiven place to the permanent set. The permanent teeth of the adult number thirty-two. Theyconsist, in each jaw, of four incisors, two canines, four focused, and.
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