590 likes | 959 Vues
Mouth cavity. Dr.ayat eldomouky. oral Anatomy. Good overall health starts with the oral cavity…. The lips. Def. Covering Contents Philtrum Labial frenulae. The mouth cavity: 1-extention 2-the oropharyngeal isthmus 3-division.
E N D
Mouth cavity Dr.ayateldomouky
oral Anatomy Good overall health starts with the oral cavity…
The lips Def. Covering Contents Philtrum Labial frenulae
The mouth cavity: 1-extention2-the oropharyngeal isthmus3-division
Vestibule of the mouth Boundaries Communication Lateral wall Opening of parotid duct
Mouth proper Roof of mouth Floor of mouth
Floor of the mouth Frenulum of the tongue Plicafimbriata Sublingual fold
Mucous membrane of the mouth Is strongly attached to alveolar periosteumSensory inervation of the mouth Roof Floor cheek
The teeth Deciduous teeth Permanent teeth: number and eruption
Intrinsic muscles of the tongueall muscles of the tongue are innervated by hypoglossal nerve except palatoglossus innervated by cranial root of accessory nerve.
Lymph drainage Submental lymph node Aubmandibular lymph node Deep cervical lymph node
The palate Hard palate soft palate
Submandibular salivary gland • Site: it lies in submandibular (digastric triangle) • Parts: divided into two parts by mylohyoid muscle superficial part: • Shape: wedge shape with • superficial surface cover by skin and fascia • Lateral surface related to the mandibule • Medial surface related to the floor of the mouse Deep part: • Lies deep to mylohyoid muscle • Related to lingual and hypoglossal nerve Submandibular duct • Emerge from the anterior end of the deep part • Open at side of the frenulum of the tongue
Sublingual salivary glangs • Is the smallest of the three main salivary glands • It has both serous and mucous acini • Site: related to sublingual fossa of mandibular under cover of mucous membrane of the mouth (sublingual fold) • Ducts: open into the floor of the mouse (8-20)
PAROTID GLAND • Definition • Shape • site
Work sheetStructure inside parotid gland • A) Auriculo-temporal n. • b) Ext. carotid a → divides (behind the neck of mandible) into maxillary and superficial temporal arteries • c) Retromandibular v. • d) Facial n.→ divides into 5 terminal brs. • e) Deep parotid L.Ns.
Nerves of the gland • Parasympathetic (secretomotor): The preganglionicfs. reach the otic ganglion • from the lesser petrosal n. (br. from the glossopharyngeal n.) • The postganglionic fs. Arising from the otic ganglion and • Carried to the gland by the auriculo-temporal n.