Deck 13: Sensory System

Question 1

The superior rectus muscle

A) causes miosis.
B) causes mydriasis.
C) moves the eyeball.
D) regulates accommodation.

Answer 1

moves the eyeball.

Question 2

Which of the following is least related to the retina?

A) rods and cones
B) fovea centralis
C) cornea
D) macula lutea

Answer 2

cornea

Question 3

This layer of the eyeball supplies blood to the retina.

A) rods and cones
B) sclera
C) choroid
D) iris

Answer 3

choroid

Question 4

Rods

A) are concentrated in the macula lutea.
B) detect red,yellow,and blue colors.
C) are concerned with night vision.
D) are located in the occipital lobe.

Question 5

The sclera

A) is the outer layer of the eyeball.
B) contains the rods and cones.
C) secretes aqueous humor.
D) is the attachment site for the suspensory ligaments.

Question 6

The gustatory sensation is most related to the

A) eighth cranial nerve.
B) rods and cones.
C) organ of Corti.
D) taste buds.

Question 7

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

Question 8

What is the name of the specialized area of a sensory neuron that detects a specific stimulus?

A) tract
B) receptor
C) dorsal root
D) node of Ranvier

Question 9

Olfaction refers to the sense of

A) vision.
13-PAGE 5
Test Bank
B) taste.
C) smell.
D) equilibrium.

Question 10

This cerebral lobe is concerned primarily with vision.

A) precentral gyrus
B) postcentral gyrus
C) occipital
D) corpus callosum

Question 11

Which of the following is located in the posterior cavity of the eyeball?

A) vitreous humor
B) cornea
C) lens
D) ciliary muscle

Question 12

Which of the following structures is located outside the eye?

A) conjunctiva
B) ciliary body
C) lens
D) vitreous humor

Question 13

A cataract is a

A) retinal detachment.
B) bulging optic disc.
C) cloudy lens.
D) scarred cornea.

Question 14

This structure is attached to the lens,causing its shape to be changed.

A) retina
B) iris
C) cornea
D) suspensory ligaments

Question 15

An increase of intraocular pressure is most likely to cause

A) cataracts.
B) damage to the retina,leading to blindness.
C) macular degeneration.
D) night blindness.

Question 16

Photoreceptors detect

A) heat.
B) acid.
C) light.
D) tissue distortion.

Question 17

The colored part of the eye that contains the intrinsic eye muscles: the circular muscle and the radial muscles.

A) suspensory ligaments
B) iris
C) retina
D) macula lutea

Question 18

Which of the following structures secretes tears?

A) lacrimal gland
B) optic disc
C) canal of Schlemm
D) ciliary body

Question 19

A nociceptor detects

A) pain.
B) light.
C) radiation.
D) [H⁺].

Question 20

What is the location of the semicircular canals and the cochlea?

A) inner ear
B) middle ear
C) outer ear
D) pharynx

Question 21

Which of the following is most related to refraction?

A) rods and cones
B) retina
C) lens
D) light

Question 22

What is the condition caused by impaired drainage of aqueous humor through the canal of Schlemm that increases intraocular pressure?

A) cataracts
B) glaucoma
C) strabismus
D) conjunctivitis

Question 23

Bone conduction occurs here.

A) outer ear
B) middle ear
C) inner ear
D) semicircular canals

Question 24

This cerebral lobe is concerned primarily with hearing.

A) occipital
B) cerebellum
C) corpus callosum
D) temporal lobe

Question 25

These hairlike receptors are located in the cochlea.

A) ossicles
B) rods and cones
C) organ of Corti
D) adenoids

Question 26

Cerumen collects here.

A) middle ear
B) inner ear
C) outer ear
D) eustachian tube

Question 27

What is the name of the tube that connects the pharynx and middle ear?

A) vestibule
B) oval window
C) eustachian
D) cochlea

Question 28

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

Question 29

What does a "choked disc" indicate?

A) increased intraocular pressure
B) glaucoma
C) increased intracranial pressure
D) strabismus

Question 30

Rods and cones are called

A) glial cells.
B) refracting structures.
C) visual reflexes.
D) receptors.

Question 31

The semicircular canals are concerned with

A) the secretion of cerumen.
B) equalizing pressure across the tympanic membrane.
C) balance.
D) smell.

Question 32

This structure separates the outer ear from the middle ear.

A) tympanic membrane
B) pinna
C) round window
D) oval window

Question 33

This gel-like substance gently pushes the retina against the choroid and maintains the shape of the eyeball.

A) aqueous humor
B) vitreous humor
C) lacrimal secretions
D) perilymph

Question 34

Which of the following is concerned with the sense of smell?

A) vestibulocochlear nerve
B) eighth cranial nerve
C) organ of Corti
D) olfaction

Question 35

This ossicle sits in the oval window.

A) malleus
B) hammer
C) stapes
D) incus

Question 36

The malleus,incus,and stapes are called

A) organ of Corti.
B) hearing receptors.
C) ossicles.
D) cartilage.

Question 37

What is the condition caused by unequal tension exerted by the extrinsic eye muscles?

A) "pink eye"
B) strabismus
C) glaucoma
D) cataracts

Question 38

What is the function of the vestibule and the semicircular canals?

A) hearing
B) smell
C) balance
D) touch and pressure

Question 39

Which of the following is one of the special senses?

A) touch
B) pain
C) balance
D) proprioception

Question 40

Which of the following is least related to the vestibulocochlear nerve?

A) cranial nerve VIII
B) the cochlear branch sends information to the temporal lobe
C) concerned with both hearing and balance
D) classified as a motor nerve

Question 41

Myopia,farsightedness,and astigmatism are

A) errors of refraction.
B) infections of the eye.
C) types of strabismus.
D) conditions of elevated intraocular pressure.

Question 42

Lysozyme,an enzyme with antimicrobial activity,is found in

A) tears.
B) vitreous humor.
C) aqueous humor.
D) endolymph.

Question 43

The optic nerve

A) receives sensory information from mechanoreceptors.
B) transmits sensory information to the temporal lobe.
C) is cranial nerve III.
D) receives sensory information from the retina.

Question 44

Contraction of the orbicularis oculi

A) raises the eyelid.
B) is innervated by the optic nerve.
C) closes the eye.
D) flattens the lens during refraction.

Question 45

What is another name for the tympanic membrane?

A) stirrup
B) oval window
C) eardrum
D) organ of Corti

Question 46

The eustachian tube connects the pharynx (throat)with this structure.

A) cochlea
B) semicircular canals
C) middle ear
D) external auditory meatus

Question 47

The conjunctiva

A) covers the cornea.
B) is a mucous membrane.
C) contains blood vessels that nourish the retina.
D) secretes aqueous humor.

Question 48

Which structure is affected by the contraction and relaxation of the ciliary muscles?

A) cornea
B) lens
C) macula lutea
D) optic chiasm

Question 49

Cerumen is

A) earwax.
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.

Question 50

Which of the following is considered the blind spot?

A) macula lutea
B) optic chiasm
C) fovea centralis
D) optic disc

Question 51

What is the name of the venous sinuses that drains the aqueous humor?

A) lateral canthus
B) macula lutea
C) canal of Schlemm
D) pupil

Question 52

This ossicle picks up vibrations from the tympanic membrane.

A) stapes
B) malleus
C) stirrup
D) incus

Question 53

In this condition,the eyelid is not completely raised,thereby making the person appear sleepy.

A) glaucoma
B) cataracts
C) ptosis of the lid
D) lid lag

Question 54

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

Question 55

The occipital lobe

A) receives information from cranial nerve III.
B) sends motor information to the iris,thereby controlling pupillary size.
C) receives sensory information from cranial nerve II.
D) contains the primary auditory cortex.

Question 56

Which of the following is most related to the stapes?

A) cerumen
B) semicircular canal
C) organ of Corti
D) middle ear ossicle

Question 57

The medial canthus and lateral canthus are

A) corners of the eye where the upper and lower eyelids meet.
B) lacrimal glands.
C) ducts through which tears drain into the nose.
D) sites of attachment for the medial and lateral rectus muscles.

Question 58

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.

Question 59

There is a heavy concentration of cones in this area of the retina.

A) fovea centralis
B) iris
C) optic disc
D) cornea

Question 60

Tactile receptors are

A) located behind the lens in the vitreous humor.
B) located within the semicircular canals.
C) activated by touch and pressure.
D) nociceptors.

Question 61

Pinpoint pupils

A) describe the size of the pupils in a darkened room.
B) are caused by the contraction of the circular muscles of the iris.
C) are caused by mydriatic drugs.
D) are caused by the contraction of the radial muscles of the iris.

Question 62

Which of the following best describes pupillary dilation?

A) miosis
B) refraction
C) amblyopia
D) mydriasis

Question 63

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.

Question 64

Which group is incorrect?

A) tunics of the eyeball:sclera,choroid,retina
B) general senses:pain,temperature,touch,pressure,proprioception
C) special senses:hearing,sight,smell,taste,balance
D) errors of refraction:myopia,farsightedness,astigmatism,glaucoma

Question 65

Which group is incorrect?

A) special senses:hearing,sight,smell,taste,balance,pain,pressure
B) errors of refraction:myopia,farsightedness,astigmatism,presbyopia
C) structures of the inner ear:semicircular canals,vestibule,cochlea
D) ossicles:malleus,incus,stapes

Question 66

Which of the following equipment is used to elicit the photopupillary reflex?

A) hammer
B) penlight
C) bell
D) Snellen chart