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Match the type of receptor with the appropriate description. -These receptors respond to stimuli that are harmful or potentially harmful to body tissues and lead to the perception of pain.


A) chemoreceptors
B) touch receptors
C) thermoreceptors
D) nociceptors

E) A) and D)
F) All of the above

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A stimulus below the ________ will activate sensory neurons,but the signal will not reach the conscious brain because higher neurons dampen it.

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perceptual...

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The hair cell of the semicircular canal hyperpolarize when the stereocilia are bent


A) in any direction.
B) towards the kinocilium.
C) away from the kinocilium.
D) towards the longest stereocilia.
E) Hair cells are not hyperpolarized by bending of the sterocilia.

F) C) and E)
G) A) and B)

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Which structures monitor rotational acceleration of the head?


A) cristae of the semicircular canals
B) maculae of the saccule only
C) maculae of the utricle only
D) maculae of the utricle and saccule

E) None of the above
F) All of the above

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Match the symptoms to the problem. -Ménière's disease


A) damage to the cerebral cortex
B) degeneration of hair cells
C) ringing in the ears
D) dizziness and nausea
E) problems with structures of the middle ear

F) A) and D)
G) A) and E)

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Greater visual acuity results from convergence of ________ numbers of photoreceptors onto retinal ganglion cells.

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Inhibiting adenyl cyclase in olfactory sensory neurons would


A) increase the sensitivity of these receptors.
B) expand the range of sensitivity of these receptors.
C) reduce the sensitivity of these receptors.
D) convert the olfactory receptors from phasic to tonic receptors.
E) have no effect on these receptors.

F) C) and D)
G) B) and C)

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After an injury,Paul has difficulty recognizing and interpreting certain sounds.These symptoms imply damage to the


A) external ear.
B) auditory cortex.
C) middle ear.
D) cochlea.

E) A) and C)
F) C) and D)

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________ between hair cell stereocilia ensure that when the largest stereocilia is bent,all of the sterocilia are bent thereby gating more ion channels.


A) Kinocilia
B) Otoliths
C) Utricles
D) Tip links

E) A) and B)
F) None of the above

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The release of neurotransmitter from a vestibular hair cell into the synapse with a sensory neuron would increase


A) in response to any mechanical stimulation of the hair cell.
B) when the stereocilia of the hair cell are displaced away from the kinocilium.
C) when the stereocilia are equally displaced to either side of the kinocilium.
D) when the stereocilia of the hair cell are displaced toward the kinocilium.

E) A) and D)
F) B) and C)

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Accomodation describes the focusing of light on the retina by changing


A) the shape of the lens.
B) pupillary diameter.
C) the shape of the cornea.
D) distance of the retina from the lens.

E) B) and C)
F) A) and D)

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________ ganglion cells transmit information about texture,while ________ ganglion cells transmit information about movement.

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Parvocellu...

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Activation of a ________ leads to the perception of pain and itch.

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Why does there seem to be a link between smell and memory?

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Olfactory pathways branch off from the o...

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The structure that overlies the organ of Corti and is attached to the tips of the hair cells is the


A) basilar membrane.
B) tectorial membrane.
C) stapedius.
D) perilymph.
E) endolymph.

F) None of the above
G) All of the above

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Our perception of the pull of gravity and linear acceleration is the result of


A) changes in the pressure exerted by the cupula on hair cells.
B) vibrations of the tectorial membrane striking hair cells.
C) the pressure exerted by the otolithic organ on hair cells of the maculae.
D) the movement of the otolithic organ within the ampullae of the semicircular canals.

E) A) and D)
F) A) and C)

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Match the stimulus to the type of receptor that typically responds to it. -stretch


A) chemoreceptor
B) mechanoreceptor

C) A) and B)
D) undefined

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Match the specific receptor to its typical stimulus. -texture


A) free nerve ending
B) Merkel receptor
C) Meissner's corpuscle
D) Ruffini corpuscle
E) Pacinian corpuscle

F) A) and D)
G) C) and E)

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The hair cells of the cochlear duct are located in the ________.

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The hair cell of the cochlea is depolarized when the stereocilia are bent


A) in any direction.
B) towards the smallest stereocilia.
C) towards the tallest stereocilia.
D) towards the middle stereocilia.
E) Hair cells are not depolarized by bending of the sterocilia.

F) A) and B)
G) A) and C)

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