Question 1

The spiral organ is housed within which of the following structures?

Accepted Answer

A)   Scala vestibuli
B)   Scala tympani
C)   Cochlear duct
D)   Anterior semicircular duct
E)   VestibuleF) A) and E)
G) A) and D)

Question 2

Why do cones exhibit less neuronal convergence than rods?

Accepted Answer

A)   Rods cannot distinguish different colors from each other.
B)   Rods do not function in bright light.
C)   No images are perceived within the optic disc.
D)   Cones do not detect black and white.
E)   Photopic vision has higher resolution than scotopic vision.F) B) and D)
G) C) and D)

Question 3

Changes in blood pressure are detected by __________ in certain arteries.

Accepted Answer

A)   mechanoreceptors
B)   chemoreceptors
C)   proprioceptors
D)   nociceptors
E)   thermoreceptorsF) A) and E)
G) B) and C)

Question 4

What is the crista ampullaris associated with?

Accepted Answer

A)   Static equilibrium when standing still
B)   Static acceleration in linear acceleration
C)   Dynamic equilibrium in angular acceleration
D)   Hearing high-pitch sounds
E)   Vision related to colorF) A) and E)
G) B) and C)

Question 5

Which organ does not have nociceptors?

Accepted Answer

A)   Brain
B)   Heart
C)   Kidney
D)   Liver
E)   StomachF) B) and E)
G) A) and B)

Question 6

The middle ear consists of a fluid-filled chamber.

Accepted Answer

A) True 
 B)False

Question 7

In a taste bud,which cell produces a receptor potential?

Accepted Answer

A)   Taste hairs
B)   Sensory nerve fibers
C)   Supporting cells
D)   Basal cells
E)   Gustatory cellsF) A) and B)
G) B) and D)

Question 8

What do pheromones stimulate?

Accepted Answer

A)   Hair cells
B)   Supporting cells
C)   Taste cells
D)   Olfactory cells
E)   Olfactory glandsF) C) and E)
G) B) and C)

Question 9

What are the only retinal cells that produce action potentials?

Accepted Answer

A)   Rods
B)   Cones
C)   Ganglion cells
D)   Bipolar cells
E)   Horizontal cellsF) B) and E)
G) A) and E)

Question 10

Human vision is limited to wavelengths ranging from __________ nm.

Accepted Answer

A)   4 to 70
B)   40 to 700
C)   400 to 700
D)   400 to 7,000
E)   4,000 to 7,000F) All of the above
G) A) and E)

Question 11

Adjustment to close-range vision involves all of the following except __________.

Accepted Answer

A)   activity of the extrinsic eye muscles
B)   change in the curvature of the lens
C)   constriction of the pupil
D)   ciliary muscle activity
E)   light adaptationF) C) and E)
G) B) and C)

Question 12

What are the first-order neurons in the visual pathway?

Accepted Answer

A)   Optic nerve fibers
B)   Rods and cones
C)   Ganglion cells
D)   Bipolar cells
E)   Amacrine cellsF) A) and E)
G) A) and B)

Question 13

Which structure acts as a transducer in the spiral organ?

Accepted Answer

A)   Stereocilium
B)   Inner hair cell
C)   Tectorial membrane
D)   Round window
E)   Basilar membraneF) B) and C)
G) A) and C)

Question 14

Stimuli produced by sound waves reach the brain following which pathway?

Accepted Answer

A)   Cochlear duct → spiral organ → ossicles → oval window → auditory canal → tympanic membrane → fibers of cochlear nerve
B)   Auditory canal → tympanic membrane → oval window → cochlear duct → ossicles → spiral organ → fibers of cochlear nerve
C)   Cochlear duct → oval window → auditory canal → tympanic membrane → ossicles → spiral organ → fibers of cochlear nerve
D)   Tympanic membrane → auditory canal → ossicles → oval window → cochlear duct → spiral organ → fibers of cochlear nerve
E)   Auditory canal → tympanic membrane → ossicles → oval window → cochlear duct → spiral organ → fibers of cochlear nerveF) C) and D)
G) None of the above

Question 15

Which of the following is not involved with spinal gating of pain signals?

Accepted Answer

A)   Nociceptors
B)   The spinothalamic tract
C)   Lower motor neurons
D)   Second-order neurons
E)   The reticulospinal tractF) A) and B)
G) All of the above

Question 16

Half of the fibers of each optic nerve decussate at the __________.

Accepted Answer

A)   superior colliculus
B)   optic chiasm
C)   lateral geniculate nucleus of the thalamus
D)   optic foramen
E)   midbrainF) D) and E)
G) C) and E)

Question 17

The output energy of all receptors is a type of __________ energy.

Accepted Answer

A)   chemical
B)   mechanical
C)   thermal
D)   electrical
E)   nuclearF) B) and D)
G) A) and D)

Question 18

Which of the following structures is visible to the naked eye?

Accepted Answer

A)   Lingual papilla
B)   Taste (gustatory) cell
C)   Taste hair
D)   Taste bud
E)   Taste poreF) B) and D)
G) C) and D)

Question 19

Light falling on the retina is absorbed by rhodopsin and photopsin in the pigment epithelium.

Accepted Answer

A) True 
 B)False

Question 20

Which of these is most vulnerable to irreversible damage caused by a very loud noise?

Accepted Answer

A)   Ossicles
B)   Cochlear hair cells
C)   Tympanic membrane
D)   Fibers of the cochlear nerve
E)   Tectorial membraneF) B) and D)
G) A) and E)

Exam 16: Sense Organs

Which of the following is not involved with spinal gating of pain signals?

Correct AnswerverifiedShow Answer

Why do cones exhibit less neuronal convergence than rods?

Correct AnswerverifiedShow Answer

Changes in blood pressure are detected by __________ in certain arteries.

Correct AnswerverifiedShow Answer

Which of the following structures is visible to the naked eye?

Correct AnswerverifiedShow Answer

The output energy of all receptors is a type of __________ energy.

Correct AnswerverifiedShow Answer

What are the only retinal cells that produce action potentials?

Correct AnswerverifiedShow Answer

In a taste bud,which cell produces a receptor potential?

Correct AnswerverifiedShow Answer

Stimuli produced by sound waves reach the brain following which pathway?

Correct AnswerverifiedShow Answer

The spiral organ is housed within which of the following structures?

Correct AnswerverifiedShow Answer

The middle ear consists of a fluid-filled chamber.

Correct AnswerverifiedShow Answer

Which structure acts as a transducer in the spiral organ?

Correct AnswerverifiedShow Answer

What are the first-order neurons in the visual pathway?

Correct AnswerverifiedShow Answer

Which of these is most vulnerable to irreversible damage caused by a very loud noise?

Correct AnswerverifiedShow Answer

Half of the fibers of each optic nerve decussate at the __________.

Correct AnswerverifiedShow Answer

Which organ does not have nociceptors?

Correct AnswerverifiedShow Answer

What is the crista ampullaris associated with?

Correct AnswerverifiedShow Answer

What do pheromones stimulate?

Correct AnswerverifiedShow Answer

Adjustment to close-range vision involves all of the following except __________.

Correct AnswerverifiedShow Answer

Human vision is limited to wavelengths ranging from __________ nm.

Correct AnswerverifiedShow Answer

Light falling on the retina is absorbed by rhodopsin and photopsin in the pigment epithelium.

Correct AnswerverifiedShow Answer

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