â¢ SILICA (noun). The noun SILICA has 1 sense: 1. a white or colorless vitreous insoluble solid (SiO2); various forms occur widely in the earth's crust as quartz or cristobalite or tridymite or lechartelierite.Familiarity information: SILICA used as a noun is very rare.Dictionary entry details.ristobalite (a white mineral consisting of silica; found in volcanic rocks). lechartelierite (a mineral form of vitreous or glassy silica; formed by the melting of quartz sand (as by lightning or a meteorite)).
Besides these glands, there are many tiny glands called minor salivary glands located in your lips, inner cheek area (buccal mucosa), and extensively in other linings of your mouth and throat. Salivary glands produce the saliva used to moisten your mouth, initiate digestion, and help protect your teeth from decay.
The Parotid Gland. The parotid gland, the largest of all three head salivary glands, is located in the parotideomasseteric region. This pyramidal-shaped gland secretes purely serous saliva and its contribution makes up approximately thirty percent of the total saliva output. Anatomy, innervation and function of the parotid gland.