Question 1

After causing vibrations of the maleus, sound waves pass (in sequence)  through the

Accepted Answer

A)   stapes, round window, scala externa perilymph, scala media endolymph, and oval window.
B)   incus, stapes, oval window, scala vestibuli perilymph, and cochlear duct endolymph.
C)   oval window, scala tympani perilymph, scala vestibuli endolymph, and spiral organ.
D)   incus, stapes, oval window, scala tympani endolymph, scala vestibuli, and helicotrema.
E)   stapes, incus, round window, scala media perilymph, and scala vestibuli endolymph.F) A) and C)
G) B) and E)

Question 2

Eyelids serve two purposes: one is to protect the eye and the other is to

Accepted Answer

A)   help distribute blood to the eye surface.
B)   help distribute lacrimal fluid to cleanse and lubricate the surface.
C)   help spread antiviral solution.
D)   help to control the transmission of the nerve impulse to the retina.
E)   prevent excess mucus from obscuring vision.F) B) and C)
G) C) and D)

Question 3

What molecules help concentrate odorants at the olfactory receptor cells?

Accepted Answer

A)   Sustentacularin
B)   Odorant-binding proteins
C)   Volatile molecules
D)   G-proteins
E)   TastantsF) A) and B)
G) C) and D)

Question 4

The "dark current" of photoreceptors refers to

Accepted Answer

A)   the exit of Na+ and Ca2+ out of the cell when light is not hitting the cell.
B)   the entry of Na+ and Ca2+ into the cell when light is not hitting the cell.
C)   the entry of K+ into the cell when light is not hitting the cell.
D)   the exit of K+ out of the cell when light is not hitting the cell.E) B) and C)
F) A) and B)

Question 5

Olfactory receptor cells are modified bipolar neurons that bear olfactory hairs.

Accepted Answer

A) True 
 B)False

Question 6

Accommodation of the lens occurs when

Accepted Answer

A)   ciliary muscles contract.
B)   the ciliary body moves closer to the lens.
C)   parasympathetic axons stimulate the ciliary muscles.
D)   the lens becomes more spherical.
E)   All of the choices are correct.F) A) and B)
G) A) and C)

Question 7

Gustatory cells within a taste bud are specialized neuroepithelial cells that have a ________ life span.

Accepted Answer

A)   7-10 hour
B)   7-10 day
C)   7-10 week
D)   7-10 month
E)   7-10 yearF) D) and E)
G) B) and D)

Question 8

The superior colliculi and pretectal nuclei function to direct reflexive responses to visual stimuli.

Accepted Answer

A) True 
 B)False

Question 9

The refractive indices between glass and oil are quite similar, as compared to the refractive indices between glass and air, which are quite different. Therefore, in which of the following situations will light bend the most?

Accepted Answer

A)   When passing between glass and air
B)   When passing between glass and oilC) A) and B)
D) undefined

Question 10

Auditory cells in the superior olivary nucleus receive their input from the

Accepted Answer

A)   cochlear nuclei, and they are involved in localizing the source of a sound.
B)   cochlear nuclei, and they determine the pitch of a sound.
C)   inferior colliculi, and they are used to relay the information directly to the primary auditory cortex.
D)   inferior colliculi, and they filter out irrelevant auditory information.
E)   thalamus, and they allow us to recognize familiar voices.F) B) and D)
G) C) and D)

Question 11

The reason we can detect so many different odors is that each olfactory neuron is slightly different from the others, allowing for a wide range of odor sensations.

Accepted Answer

A) True 
 B)False

Question 12

A receptor that is wrapped in connective tissue is referred to as being ________.

Accepted Answer

The answer of A receptor that is wrapped in connective...

Question 13

Arrange the middle ear bones from lateral to medial.
A: Stapes
B: Incus
C: Malleus

Accepted Answer

A)   a, b, c
B)   b, a, c
C)   c, a, b
D)   a, c, b
E)   c, b, aF) A) and B)
G) A) and E)

Question 14

-This cross section of skin shows general cutaneous receptors. What kind of receptor does number 5 indicate?

Accepted Answer

A)   Free nerve ending
B)   Krause bulb
C)   Lamellated corpuscle
D)   Tactile disc
E)   Root hair plexusF) All of the above
G) B) and E)

Question 15

Suspensory ligaments function to change the shape of the lens within the eye.

Accepted Answer

A) True 
 B)False

Question 16

At the optic chiasm,

Accepted Answer

A)   all axons from each optic nerve cross to the opposite side of the brain.
B)   none of the axons actually cross to the opposite side of the brain.
C)   ganglion cell axons from the medial region of each retina cross to the opposite side of the brain.
D)   ganglion cell axons from the lateral region of each retina cross to the opposite side of the brain.E) A) and C)
F) B) and C)

Question 17

These receptors detect changes in the color, intensity, and movement of light.

Accepted Answer

A)   Chemoreceptors
B)   Thermoreceptors
C)   Photoreceptors
D)   Mechanoreceptors
E)   BaroreceptorsF) B) and E)
G) B) and D)

Question 18

Because numerous cutaneous and visceral sensory neurons conduct signals on ________ ascending tracts of the spinal cord, the brain sometimes falsely localizes the location of a pain stimulus.

Accepted Answer

A)   the same
B)   very differentC) A) and B)
D) undefined

Question 19

The otolithic membrane is part of the

Accepted Answer

A)   maculae of the inner ear.
B)   tympanic cavity of the middle ear.
C)   semicircular canals of the inner ear.
D)   cochlea of the inner ear.E) B) and D)
F) B) and C)

Question 20

The vestibular nuclei are located within the ________ and project directly to the ________.

Accepted Answer

A)   medulla; cerebellum
B)   cerebellum; medulla
C)   cerebellum; thalamus
D)   thalamus; cerebral cortex
E)   thalamus; cerebellumF) A) and C)
G) C) and D)

Exam 16: Nervous System: Senses

Because numerous cutaneous and visceral sensory neurons conduct signals on ________ ascending tracts of the spinal cord, the brain sometimes falsely localizes the location of a pain stimulus.

Correct AnswerverifiedShow Answer

The refractive indices between glass and oil are quite similar, as compared to the refractive indices between glass and air, which are quite different. Therefore, in which of the following situations will light bend the most?

Correct AnswerverifiedShow Answer

Arrange the middle ear bones from lateral to medial. A: Stapes B: Incus C: Malleus

Correct AnswerverifiedShow Answer

The reason we can detect so many different odors is that each olfactory neuron is slightly different from the others, allowing for a wide range of odor sensations.

Correct AnswerverifiedShow Answer

Suspensory ligaments function to change the shape of the lens within the eye.

Correct AnswerverifiedShow Answer

-This cross section of skin shows general cutaneous receptors. What kind of receptor does number 5 indicate?

Correct AnswerverifiedShow Answer

The superior colliculi and pretectal nuclei function to direct reflexive responses to visual stimuli.

Correct AnswerverifiedShow Answer

The vestibular nuclei are located within the ________ and project directly to the ________.

Correct AnswerverifiedShow Answer

The "dark current" of photoreceptors refers to

Correct AnswerverifiedShow Answer

These receptors detect changes in the color, intensity, and movement of light.

Correct AnswerverifiedShow Answer

At the optic chiasm,

Correct AnswerverifiedShow Answer

Gustatory cells within a taste bud are specialized neuroepithelial cells that have a ________ life span.

Correct AnswerverifiedShow Answer

Auditory cells in the superior olivary nucleus receive their input from the

Correct AnswerverifiedShow Answer

Olfactory receptor cells are modified bipolar neurons that bear olfactory hairs.

Correct AnswerverifiedShow Answer

Accommodation of the lens occurs when

Correct AnswerverifiedShow Answer

A receptor that is wrapped in connective tissue is referred to as being ________.

Correct AnswerverifiedShow Answer

The otolithic membrane is part of the

Correct AnswerverifiedShow Answer

Eyelids serve two purposes: one is to protect the eye and the other is to

Correct AnswerverifiedShow Answer

After causing vibrations of the maleus, sound waves pass (in sequence) through the

Correct AnswerverifiedShow Answer

What molecules help concentrate odorants at the olfactory receptor cells?

Correct AnswerverifiedShow Answer

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The vestibular nuclei are located within the and project directly to the .

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