Cranial Nerves Label Describe the Nerve Functions CRANIAL

Cranial Nerves

Label & Describe the Nerve Functions

CRANIAL NERVES NOTES 1 -4 �I. Olfactory Sensory from olfactory �receptors in nasal cavity �Smell tests �II. Optic Thru optic canal into orbit �Sensory from retina of eye Tests of vision �III. Oculomotor Motor (mixed) to external eye �muscle �adjustment and focusing of lens �Patient asked to track a finger, check papillary reflexes �IV. Trochlear Patient asked to track a finger down and �laterally

CRANIAL NERVES 5 - 7 �V. Trigeminal Mixed – sensory from face, �mouth, teeth �Motor to muscles of mastication �Clench jaw, use cotton swab to lightly touch �face for sensation �VI. Abducens Mixed to external eye muscle Track finger movement laterally �VII. Facial Mixed to facial muscles, �Autonomic to glands of face including �salivary glands �Patient asked to use muscles of facial �expression, taste test

CRANIAL NERVES 8 -12 � VIII. Vestibulocochlear Sensory from hearing and � balance receptors TEST: Check hearing and balance � XI. Glossopharyngeal Mixed –motor to salivary gland, somatic motor to pharynx TEST Check gag reflex � X. Vagus - major parasympathetic nerve to thoracic and abdominal � viscera controlling “rest and repose” response TEST: Check swallowing reflex � XI. Accessory Mixed – mostly motor to muscles of neck and scalp � Turn head against resistance or shrug-STERNOCLEIDOMASTOID � XII. Hypoglossal Mixed – mostly motor to muscles of tongue for speech, swallowing � Patient tongue thrust should be straight

Label & Describe the Nerve Functions

DISTINGUISH DIFFERENT TYPES OF NERVES (SENSORY, MOTOR OR BOTH) � SOME � SAY � MARRY � MONEY � BUT � MY � BROTHER � SAYS � BIG � BRAINS � MATTER � MOST

CRANIAL NERVE MEMORY (MNEUMONIC) NERVE TYPE 1. OLFACTORY SOME SENSORY 2. OPTIC SAY SENSORY 3. OCULOMOTOR MARRY MOTOR 4. TROCHLEAR MONEY MOTOR 5. TRIGEMINAL BUT BOTH 6. ABDUCENS MY MOTOR 7. FACIAL BROTHER BOTH 8. VESTIBULO-COCHLEAR SAYS SENSORY 9. GLOSSO PHARYNGEAL BIG BOTH 10. VAGUS BRAINS BOTH 11. ACCESSORY MATTER MOTOR 12. HYPOGLOSSAL MOST MOTOR

Label & Describe the Nerve Functions