Question 1

The specific compound that is capable of receiving light energy as the first step in sensory transduction is

Accepted Answer

A)   retinal.
B)   rhodopsin.
C)   cone opsin.
D)   vitamin A.
E)   melanin.F) A) and B)
G) A) and C) A

Question 2

Rods and cones make direct contact with ganglion cells within the vertebrate retina.

Accepted Answer

A) True 
 B)False  False

Question 3

"Accomodation" is the process in the eye of

Accepted Answer

A)   bending light rays to varying degrees by the lens.
B)   converting light energy into electrical signals by the retina.
C)   adjustment to varying light levels by altering the sensitivity of the eye.
D)   adjustment of the amount of light admitted to the eye by adjusting pupil diameter.
E)   regulation of vitreous humor volume.F) A) and C)
G) A) and E) A

Question 4

Our sense "fullness" after a big meal is due to

Accepted Answer

A)   mechanoreceptors.
B)   thermoreceptors.
C)   stretch receptors.
D)   electromagnetic receptors.
E)   chemoreceptors.F) A) and B)
G) B) and D)

Question 5

Thermoreceptors are only located in the skin on the outside of the body.

Accepted Answer

A) True 
 B)False

Question 6

What structure in the CNS do neurons from olfactory epithelium first transmit action potentials to?

Accepted Answer

A)   amygdala
B)   accessory olfactory bulb
C)   olfactory bulb
D)   cerebral cortex
E)   cerebellumF) A) and E)
G) B) and E)

Question 7

Which of the following could be found in or on the nasal epithelium of mammals?

Accepted Answer

A)   a layer of mucus
B)   olfactory receptors
C)   basal cells that give rise to olfactory receptors
D)   supporting cells between olfactory receptor cells
E)   All of these choices are correctF) All of the above
G) B) and D)

Question 8

Processing of visual information occurs within the eye itself and before action potentials are sent via the optic nerve to the visual cortex.

Accepted Answer

A) True 
 B)False

Question 9

Which of the main taste types for which we have receptors is important for detecting possible toxic substances?

Accepted Answer

A)   salty
B)   sweet
C)   sour
D)   bitter
E)   salty and sweetF) B) and E)
G) A) and B)

Question 10

Photoreceptors are sensitive to what general type of sensory information?

Accepted Answer

A)   tactile
B)   sound
C)   temperature
D)   chemicals in the animal's environment
E)   electromagnetic radiationF) A) and B)
G) D) and E)

Question 11

A fish detects vibrations in the water by means of its __, which contains numerous __.

Accepted Answer

A)   lateral line, hair cells
B)   ear, statocysts
C)   swim bladder, stretch receptors
D)   skin, mechanoreceptors
E)   lateral line, thermoreceptorsF) C) and E)
G) A) and E)

Question 12

Our senses of taste and smell are enhanced when we are hungry.

Accepted Answer

A) True 
 B)False

Question 13

The lateral line system of fishes functions to detect vibrations in the water around them.

Accepted Answer

A) True 
 B)False

Question 14

The tapetum lucidum is a key adaptation to

Accepted Answer

A)   visual function in the deep sea.
B)   visual function in fast moving predators.
C)   visual function in brightly lit shallow marine waters.
D)   visual function in prey species that require wide fields of vision.
E)   visual sensitivity in nocturnally active animals.F) None of the above
G) A) and B)

Question 15

The ability to determine where a sound is coming from depends primarily on

Accepted Answer

A)   differences in sound intensity in the two ears.
B)   differences in time of sound arrival to the two ears.
C)   differences in sound frequency received at the two ears.
D)   differences in both frequency and intensity at the two ears.
E)   None of these choices are correct.F) C) and D)
G) B) and D)

Question 16

Which of the following kinds of receptor consists only of a naked nerve fiber ending?

Accepted Answer

A)   Pacinian corpuscle
B)   cochlear hair cell
C)   cone
D)   Meissner's corpuscle
E)   nociceptorF) A) and D)
G) D) and E)

Question 17

The ability to detect prey or obstacles using sound is exhibited by

Accepted Answer

A)   bats.
B)   dolphins.
C)   moths.
D)   sharks.
E)   Bats and dolphins are both correct.F) B) and D)
G) B) and C)

Question 18

Rods are

Accepted Answer

A)   concentrated in the fovea.
B)   sensitive mainly to blue, green, or red light in humans.
C)   the only photoreceptors which contain opsins.
D)   the only photoreceptors which contain rhodopsin.
E)   concentrated in the fovea and sensitive to colors.F) B) and E)
G) A) and D)

Question 19

The perception of a certain pitch of sound depends partly on which of the following?

Accepted Answer

A)   the amplitude of the sound waves
B)   which bones of the middle ear are moved
C)   which hair cells of the cochlea are stimulated
D)   where particles settle in the semicircular canals
E)   whether it is the round window or oval window that vibratesF) A) and E)
G) A) and D)

Question 20

The opening that light passes through as it enters a single-lens eye is termed the

Accepted Answer

A)   pupil.
B)   retina.
C)   sclera.
D)   aqueous humor.
E)   iris.F) B) and E)
G) A) and B)

Exam 43: Neuroscience Iii: Sensory Systems

The specific compound that is capable of receiving light energy as the first step in sensory transduction is

Correct AnswerverifiedA

Rods and cones make direct contact with ganglion cells within the vertebrate retina.

Correct AnswerverifiedFalse

"Accomodation" is the process in the eye of

Correct AnswerverifiedA

Our sense "fullness" after a big meal is due to

Correct AnswerverifiedShow Answer

Thermoreceptors are only located in the skin on the outside of the body.

Correct AnswerverifiedShow Answer

What structure in the CNS do neurons from olfactory epithelium first transmit action potentials to?

Correct AnswerverifiedShow Answer

Which of the following could be found in or on the nasal epithelium of mammals?

Correct AnswerverifiedShow Answer

Processing of visual information occurs within the eye itself and before action potentials are sent via the optic nerve to the visual cortex.

Correct AnswerverifiedShow Answer

Which of the main taste types for which we have receptors is important for detecting possible toxic substances?

Correct AnswerverifiedShow Answer

Photoreceptors are sensitive to what general type of sensory information?

Correct AnswerverifiedShow Answer

A fish detects vibrations in the water by means of its __, which contains numerous __.

Correct AnswerverifiedShow Answer

Our senses of taste and smell are enhanced when we are hungry.

Correct AnswerverifiedShow Answer

The lateral line system of fishes functions to detect vibrations in the water around them.

Correct AnswerverifiedShow Answer

The tapetum lucidum is a key adaptation to

Correct AnswerverifiedShow Answer

The ability to determine where a sound is coming from depends primarily on

Correct AnswerverifiedShow Answer

Which of the following kinds of receptor consists only of a naked nerve fiber ending?

Correct AnswerverifiedShow Answer

The ability to detect prey or obstacles using sound is exhibited by

Correct AnswerverifiedShow Answer

Rods are

Correct AnswerverifiedShow Answer

The perception of a certain pitch of sound depends partly on which of the following?

Correct AnswerverifiedShow Answer

The opening that light passes through as it enters a single-lens eye is termed the

Correct AnswerverifiedShow Answer

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A fish detects vibrations in the water by means of its , which contains numerous .

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