Disorders Of The Eye, Ear, And Other Sensory Organs

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Question 1

Free

Multiple Choice

What do the extrinsic muscles of the eye control?

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Movement of the eyeball

Movement of the eyelid

Size of the pupil

Shape of the lens

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Question 2

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Multiple Choice

What must happen for the pupil of the eye to dilate?

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The circular muscle of the iris must contract.

Cranial nerve III must be activated.

Stimulation of the sympathetic nervous system is required.

The optic nerve must be stimulated.

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Question 3

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Multiple Choice

Which of the following is caused by an irregular curvature of the cornea or lens?

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Nystagmus

Astigmatism

Hyperopia

Strabismus

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Question 4

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Multiple Choice

Trachoma is an eye infection caused by:

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influenza virus.

Candida albicans.

Staphylococcus bacteria.

Chlamydia bacteria.

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Question 5

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Multiple Choice

Which statement does NOT apply to chronic glaucoma?

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Degeneration and obstruction of the trabecular network

Gradual increase in intraocular pressure

Abnormally narrow angle between the cornea and iris

Damage to the retina and optic nerve

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Question 6

Multiple Choice

Which disorder is manifested by loss of peripheral vision?

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Retinal detachment

Chronic (wide-angle) glaucoma

Cataract

Macular degeneration

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Question 7

Multiple Choice

Which of the following involves a gradual clouding of the lens of the eye?

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Glaucoma

Cataract

Macular degeneration

Keratitis

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Question 8

Multiple Choice

Which of the following is a likely consequence of an untreated detached retina?

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Lack of nutrients causing death of retinal cells

Edema of the cornea causing blurred vision

Cupping of the optic disc with damage to the optic nerve

Damage to the fovea centralis

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Question 9

Multiple Choice

Which of the following is a sign of a detached retina?

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Painless blurring of vision

Eye pain, halos around lights, and nausea

Progressive loss of central vision

No pain, development of a dark area in the visual field

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Question 10

Multiple Choice

What is the basic pathological change with macular degeneration?

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Increased amount of aqueous humor in the eye

Movement of vitreous humor between the retina and the choroid

Degeneration of the retinal cells in the fovea centralis

Damage to the optic nerve and meninges

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Question 11

Multiple Choice

What does the inner ear contain?

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Malleus, incus, and stapes

Organ of Corti and semicircular canals

Tympanic membrane and auditory canal

Ossicles and oval window

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Question 12

Multiple Choice

Which of the following is an example of conduction deafness?

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Damage to the organ of Corti

Degeneration of cranial nerve VIII

Adhesions reducing the movement of the ossicles

Trauma affecting the temporal lobe

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Question 13

Multiple Choice

In a case of acute otitis media, what would a purulent discharge in the external canal of the ear and some pain relief likely indicate?

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Infection of the external ear

Obstruction of the auditory tube

Rupture of the tympanic membrane

Spread of infection into the mastoid cells

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Question 14

Multiple Choice

How does otosclerosis cause hearing loss?

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Fixation of the stapes to the oval window

Adhesions between the ossicles

Fibrosis in the tympanic membrane

Overgrowth of bone obstructing the auditory tube

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Question 15

Multiple Choice

Why does vertigo occur with Ménière's syndrome?

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Fluid is lost from the inner ear.

Increased blood pressure causes edema in the middle and inner ears.

Damage occurs to the vestibular branch of the auditory nerve.

Excessive endolymph impairs the function of hair cells in the labyrinth.

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Question 16

Multiple Choice

Which is the early effect of age-related macular degeneration?

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Loss of central visual acuity

Intermittent pain and blurred vision

Loss of peripheral vision

Loss of night vision and color perception

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Question 17

Multiple Choice

Which of the following is often the first sign of ototoxicity from drugs or chemicals?

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Sudden total loss of hearing

Tinnitus

Severe pain in ear

Fluid exudate draining from ear

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Question 18

Multiple Choice

Which of the following statements is TRUE?

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Conduction deafness results from inner ear damage.

Cochlear implants may restore hearing in cases of sensorineural loss.

Damage to the auditory area of the brain causes deafness in one ear.

Cochlear implants can replace the auditory pathway in all deaf individuals.

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Question 19

Multiple Choice

Loss of the left visual field results from damage to the:

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left optic nerve.

right optic nerve.

left occipital lobe.

right occipital lobe.

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Question 20

Multiple Choice

The involuntary abnormal movement of one or both eyes is referred to as:

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strabismus.

nystagmus.

presbyopia.

diplopia.

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