Angle of mouth Angulus oris A

12 Cheek. Bucca. Lateral wall of vestibule of mouth. A

13 Buccal fat pad. Corpus adiposum buccae. [[ Bichat]]. Encapsulated body of fat between the buccinator and masseter muscles. A

14 Oral cavity proper. Cavitas oris propria. True oral cavity enclosed anteriorly and laterally by the teeth and extending as far as the isthmus of fauces (oropharyngeal isthmus). C

15 Palate. Palatum. Partition between oral and nasal cavities.

16 Hard palate. Palatum durum. Hard, bony part of the palate. C D

17 Soft palate. Palatum molle (velum palatinum). Soft, posterior part of the palate. C D

18 Palatine raphe. Raphe palati. Median mucosal ridge at the junction of the right and left bony palatal processes. D

19 Oral mucosa. Tunica mucosa oris. Mucous membrane of oral cavity consisting of stratified, nonkeratinized squamous epithelium throughout and underlying mixed glands.

20 Frenulum of upper lip. Frenulum labii super-ioris. Median mucosal fold between the gums and upper lip. B

21 Frenulum of lower lip. Frenulum labii inferi-oris. Median mucosal fold between the gums and lower lip. B

22 Gums. Gingivae. Mucous membrane united firmly with the teeth and jaw bones. B D

23 Gingival (gum) margin. Margo gingivalis. B D

24 Gingival (interdental) papilla. Papilla gingivalis (interdentalis). B D

25 Gingival sulcus. Sulcus gingivalis. Shallow furrow between the gum margin and the tooth. Its deepening leads to cavity formation. See p. 113. A

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Essentials of Human Physiology

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