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Cranial Nerves: Type

Table 23-2 Weber p. 545

Cranial Nerve Roman NumeralCranial Nere (Name)Type of ImpulseFunction
I 1 on Olfactory sensory carries smell impulses from nasal mucous membrane to brain
II 2 old Optic Sensory Carries Visual Impulses from eye to brain
III 3olympis Oculomoter Motor Contracts eye muscles to contrl eye movements (Inferior, lateral, medial, and superior)constricts pupils and elevates eyelids.
IV 4 towering Trochlear Motor Contracts one eye muscle to control inferior medial eye movement
V 5 Tops Trigeminal Sensory, motor Sensory = Carries Sensory Impulses of pain touch temperature from the face to the brain Influences clenching and lateral jaw movements (biting, chewing)
VI 6 A Abducens Motor Controls lateral eye movements
VII 7 Fin Facial Sensory Motor Contains sensory fibers for taste on anterior two thirds of tongueand stimulates secretions fromsalivary glands (submaxillary and sublingual) and tears from lacrimal glands. Supplies the facial muscles and effects facial expressions (smile,frown,cloeeye
VIII 8 And acustic, vestibulochlear Sensory Contains sensory fibers 4 hearing & balance
IX 9 German glossopharyngeal Sensory motor contains sensory fibers for taste on posterior third of tongue and sensory fibers of the phsrynx that result in the "gag reflex" when stimulated. Provides secretory fibers to the parotid salivary glands: Promotes swallowing movements.
X 10 Viewed Vagus Sensory Motor Sensory Carries sensations from the throat, larynx, heart, lungs, bronchi, gastrointestinal tract and abdominal viscera Motor = Promotes swallowing, talking, and production of digestive juices
XI 11 Some Spinal Accessory Motor Inneravates neck muscles, (sternocleidomastoid and trapezius) that promote movement of sholders and head rotation. Also promotes some movement of the larynx
XII 12 Hops hypoglossal Motor Inneravates tongue muscles that promote the movement of food & Talking
Created by: garrowcousino
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