CAPS 391 Lecture Notes - Lecture 28: Gastrointestinal Tract, Soft Palate, Cementum
18 Nov 2015
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Alimentary canal: muscular tube from the oral cavity to the anus. Accessory organs: organs that are not part of the alimentary canal but assist digestion. Lips: muscular folds formed by the orbicularis orbis covered by skin (exterior) and mucosa (interior). Vermilion border is point where epithelium transitions (high chances of pathologies). Roof: formed by the palate: hard palate (anterior): maxillary and palatine bones covered by a mucus membrane, soft palate (posterior): fibro-muscular core (innervated by cn x) covered by a mucus membrane. It separates the oral cavity from the nasopharynx. Dental arch: divides in 2 the oral cavity: vestibule (outside dental arches, oral cavity proper (inside dental arches) Frenulum: control excessive movements: superior and inferior labial. Palatoglossal arch: connects soft palate to the tongue. It is the border between the oral cavity and the pharynx. Palatopharingeal arch: connects soft palate to the pharynx. Teeth: formed by 3 calcified tissues, enamel, dentin and cementum.
