5/15 We lose these teeth as the jaws get larger and the second or _permanent_ teeth take their place. There are twenty teeth in the first set, and thirty-two in the second. Very old persons sometimes have a third set of teeth. The Salivary~ (sal'-i-vary)~ Glands.~--There are three pairs of _salivary glands_. They form a fluid called the _saliva_ (sa-li'-va). |