Cranial Nerves

Question 1

Inability to smell or identify the correct scent

Answer 1

Neurogenic anosmia

Question 2

Neurogenic anosmia may indicate what?

Answer 2

olfactory tract lesion or tumor, or lesion of the frontal lobe

Question 3

Loss of smell may be congenital? True or False?

Answer 3

True

Question 4

An injury of nerve tissue at the top of the nose or the other higher smell pathways in the brain is due to?

Answer 4

viral upper respiratory tract infection

Question 5

Smoking and use of cocaine may also impair one’s smell. True or False?

Answer 5

True

Question 6

A refractive error that makes it hard for middle-aged and older adults to see things up close, and occurs with aging.

Answer 6

Presbyopia

Question 7

Loss of visual fields may be seen in what?

Answer 7

Retinal damage or detachment, lesions of the optic nerve, or lesions of the parietal cortex

Question 8

Swelling of the optic nerve, which results in blurred optic disc margins and dilated pulsating veins.

Answer 8

Papilledema

Question 9

How does Papilledema occur?

Answer 9

Increased intracranial pressure from intracranial hemorrhage or a brain tumor

Question 10

Drooping of the eyelid, which is seen with weak eye muscles such as myasthenia gravis

Answer 10

Ptosis

Question 11

This optic condition occurs with brain tumors

Answer 11

Optic atrophy

Question 12

Rhythmic oscillation of the eyes

Answer 12

Nystagmus - cerebellar disorder

Question 13

Limited eye movement through the six cardinal fields of gaze

Answer 13

increased intracranial pressure

Question 14

Refers to the shrinkage of optic nerve caused by the degeneration of retinal ganglion cell (RGC) axons

Answer 14

Optic atrophy

Question 15

Paralysis of the oculomotor, trochlear, or abducens nerves

Answer 15

Paralytic strabismus

Question 16

Dilated pupil (6-7 mm)

Answer 16

Oculomotor nerve paralysis

Question 17

Argyll Robertsons pupils implies what?

Answer 17

CNS syphilis, meningitis, brain tumor, alcoholism

Question 18

Constricted, fixed pupils implies what?

Answer 18

narcotics abuse or damage to the pons

Question 19

Unilaterally dilated pupil unresponsive to light or accommodation implies what?

Answer 19

damage to cranial nerve III (oculomotor)

Question 20

Constricted pupils unresponsive to light or accommodation implies what?

Answer 20

lesions of the sympathetic nervous system