Cranial Nerves

Label & Describe the Nerve Functions

CRANIAL NERVES NOTES 1-4I. Olfactory Sensory from olfactoryreceptors in nasal cavitySmell testsII. Optic Thru optic canal into orbitSensory from retina of eye Tests of visionIII. Oculomotor Motor (mixed) to external eyemuscleadjustment and focusing of lensPatient asked to track a finger, check papillary

reflexesIV. Trochlear Patient asked to track a finger

down andlaterally

CRANIAL NERVES 5- 7V. Trigeminal Mixed – sensory from face,mouth, teethMotor to muscles of masticationClench jaw, use cotton swab to lightly touchface for sensationVI. Abducens Mixed to external eye muscle Track

finger movement laterallyVII. Facial Mixed to facial muscles,Autonomic to glands of face includingsalivary glandsPatient asked to use muscles of facialexpression, taste test

CRANIAL NERVES 8-12VIII. Vestibulocochlear Sensory from hearing andbalance receptors TEST: Check hearing and balanceXI. Glossopharyngeal Mixed –motor to salivary gland,

somatic motor to pharynx TEST Check gag reflexX. Vagus - major parasympathetic nerve to thoracic and

abdominalviscera controlling “rest and repose” response TEST: Check

swallowing reflexXI. Accessory Mixed – mostly motor to muscles of neck and

scalpTurn head against resistance or shrug-

STERNOCLEIDOMASTOIDXII. Hypoglossal Mixed – mostly motor to muscles of

tongue for speech, swallowingPatient 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.GLOSSOPHARYNGEAL

BIG BOTH

10. VAGUS BRAINS BOTH

11. ACCESSORY MATTER MOTOR

12.HYPOGLOSSAL MOST MOTOR

Label & Describe the Nerve Functions