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How would a molecule that mimics cAMP affect an olfactory receptor?


A) It would increase sodium permeability.
B) It would open chemically-gated sodium channels.
C) It would depolarize the olfactory receptor.
D) It could trigger an afferent action potential.
E) All of the answers are correct.

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

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Standing still in an elevator that suddenly lowers will stimulate receptors in the


A) basilar membrane.
B) spiral organ.
C) semicircular canals.
D) bony labyrinth.
E) utricle and saccule.

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

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An area of the retina that contains only cones and is the site of sharpest vision is the


A) outer segment.
B) inner segment.
C) fovea.
D) optic disc.
E) tapetum lucidum.

F) B) and E)
G) B) and D)

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When you spin quickly,you may feel dizzy.Which component of the inner ear generates the sensations that can lead to this feeling?

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All of the following are true of olfactory pathways,except


A) they project first to the mamillary bodies and then to the thalamus.
B) primary afferents synapse in the olfactory bulb.
C) information flows to the olfactory cortex,hypothalamus,and limbic system.
D) they are the only sensory pathways to reach the forebrain without first synapsing in the thalamus.
E) they exhibit a considerable amount of convergence.

F) D) and E)
G) B) and E)

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   Figure 17-2 The Ear Use Figure 17-2 to answer the following questions: -Identify the structure that is covered up by the stapes. A) 4 B) 5 C) 6 D) 8 E) 9 Figure 17-2 The Ear Use Figure 17-2 to answer the following questions: -Identify the structure that is covered up by the stapes.


A) 4
B) 5
C) 6
D) 8
E) 9

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

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Which of the following descriptions best matches the term stereocilia?


A) move up and down when the stapes moves back and forth
B) transmit movement of the tympanic membrane to the inner ear
C) bending these produces receptor potential in hair cells
D) tiny weights necessary for the static sense of equilibrium
E) seal the oval window

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

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Where the eyelids join at the medial or lateral edge is called the ________.

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The cochlear receptors that provide our sense of hearing are ________ cells.

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Olfactory glands


A) house the sense of smell.
B) support the olfactory epithelium.
C) react to aromatic molecules.
D) coat the olfactory epithelium with a pigmented mucus.
E) group as olfactory bulbs.

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

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The vibrations received by the tympanic membrane are transferred to the oval window by the


A) auditory ossicles.
B) cochlea.
C) oval window.
D) tensor tympani.
E) stapedius muscle.

F) None of the above
G) A) and D)

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Gustatory receptors are located


A) in the eye.
B) in the ear.
C) on the surface of the tongue.
D) in the nose.
E) on the skin.

F) B) and D)
G) None of the above

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The auditory ossicles connect the


A) tympanic membrane to the oval window.
B) tympanic membrane to the round window.
C) oval window to the round window.
D) stapedius to the tympanic membrane.
E) otitis to the media.

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

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The optic disc is a blind spot because


A) there are no photoreceptors in that area.
B) the retina lacks nerves in the optic disc .
C) humans are unable to focus light on that area of the retina.
D) the vitreous body is too thick in this area for the passage of light.
E) the fovea prevents light from striking the optic disc.

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

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There are three different types of cones,each one sensitive to different light energies.These cones are designated


A) red,yellow,blue.
B) red,green,blue.
C) red,green,yellow.
D) yellow,red,blue.
E) red,white,blue.

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

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Low frequency sounds stimulate hair cells on which part of the basilar membrane?


A) area close to the round window
B) the entire membrane
C) the distal end
D) the middle region
E) area close to the oval window

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

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Taste receptors are distributed in which of the following places?


A) portions of the larynx
B) anterior tip of the tongue
C) portions of the pharynx
D) surface of the tongue
E) All of the answers are correct.

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

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The following is a list of the steps that occur in the production of an auditory sensation. 1.The pressure wave distorts the basilar membrane on its way to the round window. 2) Movement of the tympanic membrane causes displacement of the malleus. 3) Displacement of the stereocilia stimulates sensory neurons of the cochlear nerve. 4) Movement of the malleus causes movement of the incus and stapes. 5) Distortion of the basilar membrane forces the hair cells of the organ of Corti toward or away from the tectorial membrane. 6) Movement of the oval window establishes pressure waves in the perilymph of the vestibular duct. The proper sequence for these steps is


A) 2,4,1,6,5,3.
B) 2,4,6,3,5,1.
C) 2,1,4,6,5,3.
D) 2,4,6,1,5,3.
E) 2,5,4,6,1,3.

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

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Some neural tissues retain stem cells and thus the capacity to divide and replace lost neurons.Which of these special senses can replace its damaged neural receptors?


A) olfaction
B) hearing
C) equilibrium
D) proprioception
E) vision

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

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   Figure 17-2 The Ear Use Figure 17-2 to answer the following questions: -Identify the structures labeled  3.  A) cochlea B) semicircular canals C) auricle D) tympanic membrane E) vestibule Figure 17-2 The Ear Use Figure 17-2 to answer the following questions: -Identify the structures labeled "3."


A) cochlea
B) semicircular canals
C) auricle
D) tympanic membrane
E) vestibule

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

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