Anatomical Considerations Flashcards
what is the largest cranial nerve
trigeminal
what are the divisions of the trigeminal nerve
-small motor
- large sensory root
where does the motor root of trigeminal nerve originate
motor nucleus in pons and medulla oblongata
where does the motor root of trigeminal nerve exit the cranium
foramen ovale
what does the motor portion of the trigeminal nerve innervate
-masticatory muscles
- mylohyoid
- anterior belly of digastric
- tensor tymapni
- tensor veli palatini
where does the sensory root of the trigeminal nerve originate
petrous portion of temporal bone
what are the 3 divisions of the sensory root of the trigeminal nerve and where do they exit
- opthalamic V1: superior orbital fissue
- maxillary V2: foramen rotundum
- mandibular V3: foramen ovale
what types of fibers are in the opthalamic division
purely sensory
what does the opthalamic division supply
- eyeball
- conjuctiva
- lacrimal gland
- mucous membrane of nose and paranasal sinuses
- skin of forehead, eyelid and nose
what are the major branches of the opthalamic division
- nasociliary nerve
-frontal nerve - lacrimal nerve
what fibers are in the maxillary division V2
purely sensory
what are the origins of the maxillary division V2
- foramen rotundum
- pterygopalatine fossa
- inferior orbital fissure/canal
- infraorbital foramen
what are the branches of V2
- middle meningeal nerve
- pterygopalatine fossa
- infraorbital canal
- face
what goes through the pterygopalatine fossa
- zygomatic nerve
- pterygopalatine nerve
- posterior superior alveolar nerve
what are the branches of the pterygopalatine nerve
- orbital
- nasal
- palatine
- pharyngeal
