Functions Of Cranial Nerves Flashcards
Olfactory
Sensory- smell
Optic
Sensory - vision
Oculomotor
Motor - eye muscles
Parasympathetic - pupil and lens
Trochlear
Motor - superior oblique eye muscle
Trigeminal
Sensory - face and mouth
Motor - jaw muscles
Abducens
Motor - lateral rectus muscle
Facial
Sensory - taste To anterior two thirds of tongue
Motor - muscles of facial expression
Parasympathetic - salivary and lacrimal
Vestibulocochlear
Sensory - hearing and balance
Glossopharyngeal
Sensory - taste and carotid
Motor - pharyngeal muscles
Parasympathetic - parotid gland
Vagus
Sensory - aorta viscera and epiglottis
Motor - larynx
Parasympathetic - heart and viscera
Spinal accessory
Motor- trapezius and sternomastoid
Hypoglossal
Motor - tongue
Anatomy of trigeminal
Only nerve to come out of the pins
Nuclei sit on top of the petrous bone
Three divisions are ophthalmic, maxillary and mandibular.
Ophthalmic exits skull through superior orbital fissure, maxillary through foremen rotundum and mandibular through foramen ovals.
Facial nerve anatomy
All components exit skull via the internal auditory meatus.
Motor part exits through petrous bone between the styloid and mastoid processes. Many branches.
Parasympathetic branch to pterygopalatine ganglion to innervqte lacrimal gland and nasal mucosa. Submandibular ganglion inner area sublingual and submandibular salivary glands.
Optic nerve anatomy
Made up of retinal ganglion cell axons within collagen lattice (Lamina cribosa). Two optic nerves meet at the middle to form the optic chiasm and one part from echo side crosses over.
