ZOOL 370 CH 5 (Cranial Nerves) O­O­O­T­T­A­F­V­G­V­A­H *Specific Chart Nerve Basic Function Motor/Sensory 1. Olfactory Mucosa of nasal cavitysory Sensory 2. Optic Retina Sensory 3. Oculomotor Somatic­ precise eye muscle movement Visceral­ Parasympathetic innervation of the constrictor pupillae and ciliary muscles. Motor 4. Trochlear Controls 6 eye muscles responsible for precise eye movement, tracking/fixation Motor 5. Trigeminal V1­ opthalmic (s) V2­ maxillary (s) V3­ mandibular (s/m) Motor­ muscles of mastication Sensory­ face and head 6. Abducens Lateral rectus eye muscles responsible for lateral gaze Motor 7. Facial ­Muscles of the face, taste, and skin sensations (ear) ­Parasympathetic innervation of facial glands/ mucous membranes Motor­ Muscles of facial expression + parasympathetic innervation Sensory­ Sensation behind ear and taste 8. Vestibulocochlear Conducts 2 special senses; hearing (audition) + balance. Cochlea, vestibule, and semicircular canals of inner ear Sensory 9. Glossopharyngeal Motor and sensory functions within the mouth and tongue (taste buds) Motor­ muscles of pharynx; parotid gland Sensory­ posterior taste buds; receptors in pharynx and carotid sinus 10. Vagus Motor and sensory functions within mouth (taste) and thoracic/abdominal organs Motor­ muscles of pharynx/ larynx; thoracic/abdominal organs Sensory­ taste buds on tongue/larynx; thoracic/abdominal organs 11. Acessory Muscles of larynx/pharynx, soft palate, shoulder, and neck Motor 12. Hypoglossal Tongue muscles Motor *More basic chart Cranial Nerve: Major Functions: I Olfactory smell II Optic vision III Oculomotor eyelid and eyeball movement IV Trochlear innervates superior oblique turns eye downward and laterally V Trigeminal chewing face & mouth touch & pain VI Abducens turns eye laterally VII Facial controls most facial expressions secretion of tears & saliva taste VIII Vestibulocochlear hearing (auditory) equillibrium sensation IX Glossopharyngeal taste senses carotid blood pressure X Vagus senses aortic blood pressure slows heart rate stimulates digestive organs taste XI Spinal Accessory controls trapezius & sternocleidomastoid controls swallowing movements XII Hypoglossal controls tongue movements
