temporal_and_infratemporal_3.pdf
- 1. Branches from 1st part: Maxillary artery Anterior tympanic artery: (Through petrotympanic fissure), supplies deep surface of the tympanic membrane Accessory meningeal artery: (Through foramen ovale) supplies dura mater Deep auricular artery: external acoustic meatus
- 2. Maxillary artery Branches from 2nd part: Deep temporal arteries Pterygoid arteries Buccal artery Masseteric artery
- 3. Pterygopalatine Fossa Inverted teardrop- shaped space lateral side of skull Walls: Anterior: posterior surface of the maxilla Medial: Perpendicular plate of the palatine bone Posterior: Pterygoid process of sphenoid bone Roof: sphenoid bone
- 5. Maxillary nerve Exits the middle cranial fossa through the foramen rotundum Exits pterygopalatine fossa as the infra-orbital nerve through the inferior orbital fissure
- 6. Maxillary nerve branches Orbital branches Greater palatine nerve Lesser palatine nerve Nasal nerves pharyngeal nerve Zygomatic nerve Posterior superior alveolar nerve alveolar nerve Infra-orbital nerve
- 7. Maxillary nerve branches Greater palatine nerve Lesser palatine nerve Pass inferiorly from the pterygopalatine ganglion Through the palatine canal Through small foramina Greater: Greater: Roof of the oral cavity to innervate mucosa as far as premolars Posterior inferior nasal nerves Lesser: supply the soft palate
- 8. Maxillary nerve branches Posterior superior lateral nasal nerves: (through the sphenopalatine foramen, supply the lateral wall of the nasal cavity) Posterior superior medial nasal nerves: supplies the roof and the nasal septum Nasal branches
- 9. Nasal branches from the maxillary nerve: Nasopalatine nerve: (largest) passes forward and down the medial wall of the nasal cavity to pass through the incisive canal onto the roof of the oral cavity, and terminates by supplying the oral mucosa posterior to the incisor teeth
- 10. Maxillary nerve branches Pharyngeal nerve Passes posteriorly from the pterygopalatine ganglion Leaves through the palatovaginal canal Supply the mucosa and glands of the and glands of the nasopharynx
- 11. Maxillary Nerve branches Zygomatic nerve: Pteyrgopalatine fossa Inferior orbital fissure Zygomaticotemporal nerve: skin over the temple Zygomaticofacial N: skin over the prominence of the prominence of the cheek Posterior superior alveolar nerve: through the pterygomaxillary fissure through a small alveolar foramen: supplies the molar teeth and adjacent buccal gingivae and maxillary sinus
- 12. Maxillary Nerve branches Infraorbital nerve: Direct continuation of the maxillary nerve through the inferior orbital fissure infra-orbital canal Middle superior alveolar Anterior superior Anterior superior alveolar Exits through the infra- orbital foramen Inferior palpebral: skin of the lower eyelid and cheek Nasal: the side of the nose (ala) Superior labial: upper lip
- 13. Nerve of the pterygoid canal Formed in the middle cranial fossa by the union of: Greater petrosal nerve (branch of the facial nerve) Deep petrosal nerve (branch of the internal carotid plexus). Enters through pterygoid canal Join pterygopalatine ganglion Caries: Caries: preganglionic parasympathetic fibers from greater petrosal postganglionic sympathetic fibers from deep petrosal