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Taste buds are monitored by cranial nerves


A) IX, X, and XI.
B) VII, VIII, and IX.
C) VII, IX, and X.
D) V, VII, and IX.
E) IX, XI, and XII.

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

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The cell bodies of sensory neurons that innervate the hair cells of the cochlea form the ________ ganglion.


A) vestibular
B) spiral
C) cochlear
D) acoustic
E) auditory

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

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The membrane proteins that respond to chemical stimuli to produce sweet, bitter, and umami sensations are called ________.

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Which of the following statements about the retina is True ?


A) Ganglion cells send axons to the brain as cranial nerve II.
B) Axons carrying its output synapse in the thalamus.
C) It has photoreceptors that do not respond to dim light.
D) It has photoreceptors that do not respond to red light.
E) all of the above are True

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

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The neural tunic


A) contains ganglion cells.
B) contains the photoreceptor cells.
C) contains axons.
D) all of the above
E) none of the above

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

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The following steps occur in rods when they are excited by photons of light. 1) Ganglia cells detect changes in bipolar cell activity. 2) Neurotransmitter release changes. 3) Retinal changes to a more linear form. 4) Rhodopsin breaks down (bleaches) . 5) Opsin changes the membrane permeability of the outer segment to Na⁺. 6) Opsin activation occurs. The proper sequence for these steps is


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

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

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Which of the following is True of the vascular tunic of the eye?


A) provides a route for blood vessels and lymphatics that supply tissues of the eye
B) regulates the amount of light entering the eye
C) secretes and reabsorbs the aqueous humor
D) controls the shape of the lens
E) all of the above

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

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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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Which of the following statements concerning vision is False ?


A) Approximately half of the fibers in each optic nerve cross to opposite sides of the brain at the optic chiasm.
B) Fibers of the optic nerve synapse at the lateral geniculates of the thalamus.
C) The image that is formed on the retina is inverted.
D) The entire retina receives equal representation in the visual cortex.
E) The visual cortex of the brain receives the entire field of vision.

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

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The largest numbers of taste buds in adults are associated with the


A) pharynx.
B) larynx.
C) filiform papillae.
D) fungiform papillae.
E) circumvallate papillae.

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

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When all three cone populations are stimulated equally, we perceive


A) red.
B) blue.
C) green.
D) white.
E) blackness.

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

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________ fills the membranous labyrinth.

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Which of the following is a function of tears?


A) lubricate the eye
B) wash away debris
C) provide oxygen
D) nourish the cornea and conjunctiva
E) all of the above

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

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The quantity of neurotransmitter that is released by a hair cell


A) responds to almost any mechanical stimulation of the hair cell.
B) is sensitive to which way stereocilia are bent with respect to the kinocilium.
C) determines if a sensory neuron will be excited.
D) all of the above
E) none of the above

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

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Taste receptors are distributed in which of the following places?


A) surface of the epiglottis
B) surface of the tongue
C) portions of the pharynx
D) all of the above
E) none of the above

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

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   Figure 15-2 The Sectional Anatomy of the Eye Use Figure 15-2 to answer the following questions: -Identify the structure labeled  9.  A)  suspensory ligaments B)  optic disc C)  sclera D)  fovea E)  pupil Figure 15-2 The Sectional Anatomy of the Eye Use Figure 15-2 to answer the following questions: -Identify the structure labeled "9."


A) suspensory ligaments
B) optic disc
C) sclera
D) fovea
E) pupil

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

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The function of gustatory receptors parallels that of


A) light receptors in the eye.
B) mechanoreceptors in the ear.
C) olfactory receptors.
D) lamellated corpuscles.
E) Meissner corpuscles.

F) A) and C)
G) All of the above

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In which of the following cases would the focal distance be greater?


A) an object 10 inches away from your nose
B) an object 20 feet away

C) A) and B)
D) undefined

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The vestibular nuclei at the boundary of the pons and the medulla function in all of the following, except that they


A) integrate the vestibular information arriving from each side of the head.
B) relay vestibular information to the cerebellum.
C) relay vestibular information to the cerebral cortex.
D) send commands to motor nuclei in the brain stem and spinal cord.
E) send information to the vestibular complex of the inner ear.

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

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The structure that overlies the organ of Corti is the


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

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

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