BIO 211 Lecture Notes - Lecture 26: Frenulum Of Tongue, Parotid Gland, Submandibular Duct
1 Dec 2020
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Document Summary
Mastication (chewing) breaks food into smaller pieces to be swallowed and exposes more surface to the action of digestive enzymes. Food stimulates oral receptors that trigger an involuntary chewing reflex tongue, buccinator, and orbicularis oris manipulate food. Masseter and temporalis elevate the teeth to crush food. Medial and lateral pterygoids, and masseter swing teeth in side-to-side grinding action of molars. Dissolves molecules so they can stimulate the taste buds. Moistens food and bind it together into bolus to aid in swallowing inhibit bacterial growth. Hypotonic solution of 97. 0% to 99. 5% water and the following solutes: Salivary amylase enzyme that begins starch digestion in the mouth lingual lipase enzyme produced in buccal cavity that is activated by stomach acid and digests fat after the food is swallowed. Mucus binds and lubricates the mass of food and aids in swallowing. Electrolytes - na+, k+, cl-, phosphate and bicarbonate lysozyme enzyme that kills bacteria immunoglobulin a (iga) an antibody that inhibits bacterial growth.
