Question 1

An inflammation of one of the ciliary glands of the eyelashes is called a

Accepted Answer

A)   sty.
B)   boil.
C)   chalazion.
D)   meibomian cyst.
E)   pinkeye.

Question 2

The attenuation reflex

Accepted Answer

A)   amplifies loud noises.
B)   enhances low frequency sounds.
C)   prevents damage to delicate ear structures.
D)   involves the scala vestibuli and the scala tympani.
E)   vibrates the tympanic membrane.

Question 3

Match the structure with the appropriate description.
-visual field

Accepted Answer

A)  the area that can be seen with the eyes open
B)  opening in the orbit through which the optic nerve passes
C)  the cerebral area that integrates messages from retina
D)  area where medial ganglion cell axons cross over
E)  the route of the ganglionic axons beyond the chiasma

Question 4

Match the structure with the appropriate description.
-olfactory tract

Accepted Answer

A)  relay olfactory information to the brain and synapse with association neurons in the olfactory bulb
B)  area of the brain where the olfactory tracts terminate
C)  enlargements on the dendrites of olfactory neurons
D)  fibers that connect the olfactory bulb to the cortex
E)  the expanded anterior portions of the olfactory nerves

Question 5

Which of the following is true?

Accepted Answer

A)   The cochlear duct is filled with perilymph.
B)   The bony core of the cochlea is called the modiolus.
C)   The foot plate of the incus fits into the round window.
D)   The vestibule is one of the regions of the organ of corti.
E)   The spiral organ is found in the semicircular canals.

Question 6

You are an airborne molecule that dissolves in the fluid covering the olfactory epithelium. Which of the following must you do in order to depolarize neurons in the olfactory epithelium?

Accepted Answer

A)   stimulate mitral cells
B)   release acetylcholine
C)   cause proliferation of basal cells
D)   bind to receptor molecules on the olfactory hair membrane
E)   lower the threshold of the cell

Question 7

-Olfaction is the sense of smell. What does "D" represent?

Accepted Answer

A)   olfactory bulb
B)   cilia (olfactory hairs) 
C)   olfactory neuron
D)   axon of olfactory neuron
E)   olfactory tract

Question 8

Match the structure with the appropriate description.
-eyebrows

Accepted Answer

A)  lubricate the eyelid
B)  protect the eye from falling objects
C)  an inflamed ciliary gland
D)  small tubes that drain tears into the lacrimal sac
E)  inflammation of the conjunctiva

Question 9

Which of the following cranial nerves innervates an eye muscle?

Accepted Answer

A)   optic
B)   facial
C)   abducens
D)   trigeminal
E)   vagus

Question 10

Which of the following is part of the spiral organ (organ of Corti) ?

Accepted Answer

A)   modiolus
B)   vestibule
C)   tectorial membrane
D)   scala tympani
E)   chorda tympani

Question 11

Match the description with the most appropriate structure.
-oval window

Accepted Answer

A)  structures that produce earwax
B)  fluid in the membranous labyrinth
C)  fluid between the membranous and bony labyrinth
D)  ossicles connect this structure to eardrum
E)  connects the middle ear to the pharynx

Question 12

Cochlear neurons are stimulated by

Accepted Answer

A)   vibrating the oval window.
B)   vibrations of the tectorial membrane.
C)   bending microvilli or stereocilia on the hair cells.
D)   movement of the otoliths in the endolymph.
E)   turning the spiral organ.

Question 13

Match the description with the most appropriate structure.
-perilymph

Accepted Answer

A)  structures that produce earwax
B)  fluid in the membranous labyrinth
C)  fluid between the membranous and bony labyrinth
D)  ossicles connect this structure to eardrum
E)  connects the middle ear to the pharynx

Question 14

Match the structure with the appropriate description.
-auditory ossicles

Accepted Answer

A)  organ of hearing
B)  passageway from the outside to the eardrum
C)  interconnecting tunnels in the temporal bone
D)  tiny bones in the middle ear
E)  connecting chambers of inner ear filled with endolymph

Question 15

Why does inhaling deeply and slowly through the nose help to identify an odor?

Accepted Answer

A)   More air containing the odor is brought into contact with the olfactory epithelium.
B)   Impulses originate slowly in the olfactory epithelium.
C)   The tissue needs more time in contact with the odor.
D)   Threshold for odor detection is high.
E)   Receptors in the olfactory epithelium are highly specific.

Question 16

Match the structure with the appropriate description.
-inner ear

Accepted Answer

A)  eardrum
B)  part of the ear that contains the organ of hearing
C)  the pinna and external auditory meatus are part of this
D)  fleshy portion of the external ear
E)  air-filled space within the temporal bone

Question 17

Match the description with its correct name.
-astigmatism

Accepted Answer

A)  difficulty seeing distant objects
B)  a type of refractory error
C)  clouding of the lens of the eye
D)  increased intraocular pressure that can lead to loss of vision
E)  loss of acute central vision

Question 18

Some thyroid disorders are characterized by an increase in the width of the palpebral fissure. This would be an increase in the distance between the

Accepted Answer

A)   eyebrows.
B)   eyelashes.
C)   eyelids.
D)   eyes.
E)   lacrimal glands.

Question 19

Which of the following definitions best describes the timbre of sounds?

Accepted Answer

A)   loudness
B)   amplitude
C)   wave frequency
D)   resonance quality
E)   pitch

Question 20

The transparent anterior portion of the sclera is the

Accepted Answer

A)   iris.
B)   retina.
C)   cornea.
D)   choroid.
E)   pupil.

Exam 15: The Special Senses

You are an airborne molecule that dissolves in the fluid covering the olfactory epithelium. Which of the following must you do in order to depolarize neurons in the olfactory epithelium?

Correct AnswerverifiedShow Answer

Which of the following definitions best describes the timbre of sounds?

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Why does inhaling deeply and slowly through the nose help to identify an odor?

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Which of the following cranial nerves innervates an eye muscle?

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Match the description with the most appropriate structure. -oval window

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Match the structure with the appropriate description. -visual field

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The transparent anterior portion of the sclera is the

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Match the description with its correct name. -astigmatism

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Match the structure with the appropriate description. -eyebrows

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Which of the following is true?

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Match the structure with the appropriate description. -auditory ossicles

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An inflammation of one of the ciliary glands of the eyelashes is called a

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The attenuation reflex

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Cochlear neurons are stimulated by

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Which of the following is part of the spiral organ (organ of Corti) ?

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Match the structure with the appropriate description. -inner ear

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-Olfaction is the sense of smell. What does "D" represent?

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Some thyroid disorders are characterized by an increase in the width of the palpebral fissure. This would be an increase in the distance between the

Correct AnswerverifiedShow Answer

Match the structure with the appropriate description. -olfactory tract

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Match the description with the most appropriate structure. -perilymph

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