| Question | Answer |
| Buccal Nerve | Trigeminal ganglion→V3→foramen ovale→infratemporal fossa→anterior part→buccal n.→skin of cheek, facial gingiva and vestibular mucosa of Mandibular molars & 2nd premolar |
| External branch of PSA n. | Trigeminal ganglion→V2→Foramen rotundum→pterygopalatine fossa→pterygomaxillary fissure→Infratemporal fossa→external branch of PSA→buccal gingiva and alveolar mucosa of 2nd & 3rd molars, DB root of 1st molar |
| Incisive Nerve | Trigeminal ganglion→V3→foramen ovale→infratemporal fossa→ IA n. →mandibular foramen→mandibular canal→becomes incisive n.@ mental foramen (does not enter foramen)→POP of 1st premolar, canine, and incisors of quadrant |
| Nasopalatine Nerve | Trigeminal ganglion→V2→F. rotundum→pterygopalatine fossa→nasopalatine n.→pterygopalatine ganglion→sphenopalatine f.→nasal cavity→nasopalatine canal→incisive f.→anterior hard palate, lingual gingiva of anterior teeth, osseous tissue, overlying mucosa |
| Infraorbital Nerve | Trigeminal ganglion→V2→Foramen rotundum→pterygopalatine fossa→infraorbital n. →inferior orbital fissure→infraorbital groove→infraorbital canal→infraorbital foramen→(relevant to dentistry) skin and mucous membranes of upper lip |
| Lesser Palatine Nerve | Trigeminal ganglion→V2→Foramen rotundum→pterygopalatine fossa→lesser palatine n. →pterygopalatine ganglion→palatine canal→lesser palatine foramen→soft palate and palatine tonsilar region |
| Mylohyoid Nerve | Trigeminal ganglion→V3→foramen ovale→infratemporal fossa→ IA n. →Mylohyoid n.→mylohoid m. & anterior belly of digastric m. (motor & sensory), may have supplemental sensory to posterior teeth |
| Mental Nerve | Trigeminal ganglion→V3→foramen ovale→infratemporal fossa→ IA n.→→mandibular foramen→mandibular canal→mental foramen→mental n.→skin of chin, lower lip, facial gingiva and vestibular mucosa of anterior teeth and 1st premolar of quadrant |
| Internal branch of PSA n. | Trigeminal ganglion→V2→Foramen rotundum→pterygopalatine fossa→pterygomaxillary fissure→Infratemporal fossa→internal branch of PSA→PSA foramen on infratemporal surface of the maxilla→POP of 2nd & 3rd molars, L & DB roots of 1st molar |
| Inferior Alveolar Nerve | Trigeminal ganglion→V3→foramen ovale→infratemporal fossa→ IA n. →mandibular foramen→mandibular canal→POP of molars & 2nd premolar |
| Lingual Nerve | Trigeminal ganglion→V3→foramen ovale→infratemporal fossa→ lingual n.→anterior 2/3 of tongue for pain, touch, temp., lingual gingiva, vestibular mucosa, mucosa of floor of mouth |
| Middle Superior Alveolar n. | Trigeminal ganglion→V2→F. rotundum→pterygopalatine fossa→infraorbital n. →inferior orbital fissure→infraorbital groove→infraorbital canal→MSA n.→POP, facial gingiva & vestibular mucosa of premolar teeth & MB root of 1st molar, portion of maxillary sinus |
| Greater Palatine Nerve | Trigeminal ganglion → V2→Foramen rotundum→pterygopalatine fossa→greater palatine n.→pterygopalatine ganglion→palatine canal→greater palatine foramen→mucosa & underlying osseous tissue of hard palate, lingual gingiva of posterior teeth |
| Anterior Superior Alveolar n. | Trigeminal ganglion→V2→Foramen rotundum→pterygopalatine fossa→infraorbital n. →inferior orbital fissure→infraorbital groove→infraorbital canal→ASA n.→POP, facial gingiva, vestibular mucosa of anterior teeth of quadrant, upper lip |
