Multiple Choice
Identify the
choice that best completes the statement or answers the question.
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1.
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Photoreceptors detect
a. | heat. | b. | acid. | c. | light. | d. | tissue
distortion. |
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2.
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The gustatory sensation is most related to
the
a. | eighth cranial nerve. | b. | rods and cones. | c. | organ of
Corti. | d. | taste buds. |
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3.
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Which cerebral lobe is concerned primarily with
vision?
a. | Precentral gyrus | b. | Postcentral gyrus | c. | Occipital | d. | Corpus
callosum |
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4.
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Which of the following structures secretes
tears?
a. | Lacrimal gland | b. | Optic disc | c. | Canal of
Schlemm | d. | Ciliary body |
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5.
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Which of the following is least related to the
optic nerve?
a. | Cranial nerve II | b. | Sensory nerve | c. | Conveys
information from the retina to the occipital lobe | d. | Innervates the extrinsic eye muscles |
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6.
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What is the location of the semicircular canals and
the cochlea?
a. | Inner ear | b. | Middle ear | c. | Outer
ear | d. | Pharynx |
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7.
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The malleus, incus, and stapes are called
(the)
a. | organ of Corti. | b. | hearing receptors. | c. | ossicles. | d. | cartilage. |
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8.
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Which structure separates the outer ear from the
middle ear?
a. | Tympanic membrane | b. | Pinna | c. | Round
window | d. | Oval window |
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9.
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Which ossicle sits in the oval
window?
a. | Malleus | b. | Hammer | c. | Stapes | d. | Incus |
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10.
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Bone conduction occurs in the
a. | outer ear. | b. | middle ear. | c. | inner
ear. | d. | semicircular
canals. |
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11.
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Cerumen collects in the
a. | middle ear. | b. | inner ear. | c. | outer
ear. | d. | eustachian tube. |
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12.
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The semicircular canals are concerned
with
a. | the secretion of cerumen. | b. | equalizing pressure across the tympanic membrane. | c. | balance. | d. | smell. |
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13.
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Rods and cones are called
a. | glial cells. | b. | refracting structures. | c. | visual
reflexes. | d. | receptors. |
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14.
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What does a “choked disc”
indicate?
a. | Increased intraocular
pressure | b. | Glaucoma | c. | Increased intracranial pressure | d. | Strabismus |
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15.
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What is the effect of contraction and relaxation of
the ciliary muscle?
a. | Dilated pupil | b. | Change in the shape of the lens | c. | Raised eyelid | d. | Blinking |
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16.
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The gel-like substance that gently pushes the
retina against the choroid and maintains the shape of the eyeball is
a. | aqueous humor. | b. | vitreous humor. | c. | lacrimal
secretions. | d. | perilymph. |
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17.
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What is the function of the vestibule and the
semicircular canals?
a. | Hearing | b. | Smell | c. | Balance | d. | Touch and
pressure |
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18.
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Which of the following is one of the special
senses?
a. | Touch | b. | Pain | c. | Balance | d. | Proprioception |
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19.
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There is a heavy concentration of cones in which
area of the retina?
a. | Fovea centralis | b. | Iris | c. | Optic
disc | d. | Cornea |
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20.
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Myopia, farsightedness, and astigmatism
are
a. | errors of refraction. | b. | infections of the eye. | c. | types of
strabismus. | d. | conditions of
elevated intraocular pressure. |
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21.
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Lysozyme, an enzyme with antimicrobial activity, is
found in
a. | tears. | b. | vitreous humor. | c. | aqueous
humor. | d. | endolymph. |
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22.
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Which of the following is most related to the sense
of hearing?
a. | Semicircular canals | b. | First cranial nerve | c. | Organ of
Corti | d. | Vestibular nerve |
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23.
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Which ossicle picks up vibrations from the tympanic
membrane?
a. | Stapes | b. | Malleus | c. | Stirrup | d. | Incus |
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24.
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Cerumen is
a. | ear wax. | b. | inner ear fluid. | c. | fluid that bends
the organ of Corti. | d. | inner ear fluid
that stimulates the balance receptors in the semicircular
canals. |
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25.
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Which of the following is most related to the
stapes?
a. | Cerumen | b. | Semicircular canal | c. | Organ of
Corti | d. | Middle ear
ossicle |
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26.
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The choroid
a. | contains the blood vessels that nourish the
retina. | b. | secretes aqueous humor. | c. | is the window of the eye. | d. | is avascular. |
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27.
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The conjunctiva
a. | covers the cornea. | b. | is a mucous membrane. | c. | contains blood
vessels that nourish the retina. | d. | secretes aqueous
humor. |
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28.
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Which of the following best describes pupillary
dilation?
a. | Miosis | b. | Refraction | c. | Amblyopia | d. | Mydriasis |
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29.
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Which of the following equipment is used to elicit
the photopupillary reflex?
a. | Hammer | b. | Penlight | c. | Bell | d. | Snellen
chart |
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30.
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Contraction of the radial muscles of the iris
causes
a. | mydriasis. | b. | pinpoint pupils. | c. | both eyeballs to
gaze skyward. | d. | both eyeballs to
deviate medially. |
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