Interesting Cranial Nerves Flashcards
What clinical findings would you observe if this nerve is damaged:
Olfactory Nerve
Loss of smell (anosmia)
What clinical findings would you observe if this nerve is damaged:
Optic Nerve
Blindness/visual field abnormalities
Loss of papillary constriction
What clinical findings would you observe if this nerve is damaged:
Occulomotor Nerve
1) Dilated pupil
2) Loss of normal pupillary reflex
3) Eye moves down inferiorly and laterally
What clinical findings would you observe if this nerve is damaged:
Trochlear
1) Inability to look inferiorly when the eye is adducted
What clinical findings would you observe if this nerve is damaged:
Trigeminal
1) Loss of sensation and pain the the region supplied by the 3 divisions of the nerve over the face
2) Loss of motor function of the muscles of mastication on the side of the lesion
What clinical findings would you observe if this nerve is damaged:
Abducens
Inability to laterally move the eye
What clinical findings would you observe if this nerve is damaged:
Facial nerve
1) Paralysis of facial muscles
2) Abnormal taste sensation in the anterior 2/3 of the tongue.
3) Dry conjunctivae
4) Paraylsis of the contralateral facial muscles below the eye
What clinical findings would you observe if this nerve is damaged:
Vestibulocochlear Nerve
1) Progressive unilateral hearing loss
2) Tinnitis
What clinical findings would you observe if this nerve is damaged:
Glossopharyngeal
1) Loss of taste to the posterior 1/3 of the tongue
2) Los of sensation of the soft palate
What clinical findings would you observe if this nerve is damaged:
Vagus
1) Soft palate deviation
2) Devisation of the uvula to the normal side
3) Vocal cord paralysis
What clinical findings would you observe if this nerve is damaged:
Accessory Nerve
1) Paralysis of sternocleidomastoid and trapezius muscles
What clinical findings would you observe if this nerve is damaged:
Hypoglossal nerve
1) Atrophy of ipsilateral muscles of the tongue
2) Deviation of the tongue to the affected side
What nerves are involved in the corneal (blink) reflex?
Afferent: Trigeminal
Efferent: Facial nerve
What nerves are involved in the gag reflex?
Afferent: Glossopharyngeal nerve
Efferent: Vagus nerve
What nerves are involved in the pupillary (light) reflex?
Afferent: Optic nerve
Efferent: Occulomotor
