HTHSCI 1H06 Lecture Notes - Lecture 14: Mucin, Buccinator Muscle, Immunoglobulin A
8 Apr 2018
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Esophagus: the alimentary canal (the gi system) Secretion: mixing and propulsion, digestion, absorption, defecation, mastication = chewing, deglutition = swallowing, emesis: vomiting. Labial frenulum: attaches the gums to the upper lip - superior and inferior. Lingual frenulum: attaches tongue to bottom of oral cavity: gustation (to taste, 10,000 papillae cover the tongue. Supra-numary teeth: extra teeth: enamel (hardest substance in body, calcium carbonate & calcium phosphate, what you visibly see, 97% calcium salt, denser than bones in your body, trigeminal nerve supplies teeth. Last thing to disintegrate after death: mastication - chewing, tongue, keeps food on your teeth, 3 intrinsic muscles (innervated by hypoglossal nerve) Attaches from base of tongue to hyoid bone. Styloglossus: attaches to styloid process, elevates base of tongue so that you can swallow, genioglossus. Let"s you sti(cid:272)k your tongue out: what"s so spe(cid:272)ial a(cid:271)out the hyoid (cid:271)one, held in space just by muscular attachments.
