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12 Cards in this Set
- Front
- Back
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I. Olfactory
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Purely sensory;
Carries impulses for the senses of smell |
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II. Optic
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Purely sensory;
Carries impulses for vision |
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III. Oculomotor
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Supplies motor fibers to 4 of the 6 muscles that direct the eyeball; to the eyelid; and to the internal eye muscles controlling lens shape and pupil size
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IV. Trochlear
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Supplies motor fibers for one external eye muscle (superior oblique)
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V. Trigeminal
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Conducts sensory impulses from the skin of the face and mucosa of the nose and mouth;
Also contains motor fibers that activate the chewing muscles |
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VI. Abducens
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Supplies motor fibers to the lateral rectus muscle, which rolls the eye laterally
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VII. Facial
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Activates the muscles of facial expression and the lacrimal and salivary glands;
Carries sensory impulses from the taste buds of anterior tongue |
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VIII. Vestibulocochlear
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Purely sensory;
Vestibular branch transmits impulses for the sense of balance and cochlear branch transmits impulses for the sense of hearing |
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IX. Glossopharyngeal
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Supplies motor fibers to the pharynx (throat) that promote swallowing and saliva production;
Carries sensory impulses from taste buds of the posterior tongue and from pressure receptors of the carotid artery |
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X. Vagus
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Fibers carry sensory impulses from and motor impulses to the pharynx, larynx, and the abdominal and thoracic viscera; Most motor fibers are parasympathetic fibers that promote digestive activity and help regulate heart activity
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XI. Accessory
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Mostly motor fibers that activate the sternocleidomastoid and trapezius muscles
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XII. Hypoglossal
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Motor fibers control tongue movements;
Sensory fibers carry impulses from the tongue |
