Salivary gland | Function, Secretion, & Structure | Britannica
https://www.britannica.com/science/salivary-gland
Websalivary gland, any of the organs that secrete saliva, a substance that moistens and softens food, into the oral cavity of vertebrates. Salivary glands may be predominantly serous, mucous, or mixed in secretion. Mucus is a thick, clear, and somewhat slimy substance.
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