The eustachian tube connects the middle ear to the ____.
a. pharynx
b. larynx
c. outer ear
d. frontal sinuses
e. cochlea
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Question 2) Presynaptic facilitation results from
a. alteration of calcium permeability
b. continued generation of EPSPs
c. neuromodulator effects
d. increased neurotransmitter production
e. none of the above
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Question 3) Human ears can detect sound waves between which ranges of frequencies?
a. 2 to 20 hertz
b. 10 to 100 megahertz
c. 100 to 200 megahertz
d. 1 to 10,000 hertz
e. 20 to 20,000 hertz
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Question 4) Neuromodulators
a. bind to receptors at synapses
b. contribute directly to EPSPs
c. contribute directly to IPSPs
d. may influence neurotransmitter production
e. speed up contiguous impulse conduction
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Question 5) What two sensory systems are in the inner ear?
a. eardrum and pinna
b. auditory ossicles and eustachian tube
c. cochlea and auditory ossicles
d. cochlea and vestibular apparatus
e. vestibular apparatus and semicircular canals
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Question 6) In convergence,
a. many presynaptic cells synapse with a single postsynaptic cell
b. one axon directly influences the activity of many other cells
c. many dendrites converge on one cell body
d. all of the above are true
e. none of the above are true
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Question 7) Depth perception relies on what kind of field of vision?
a. diplopia
b. color vision
c. binocular
d. monocular
e. fovea
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Question 8) Which statement about a graded potential is false?
a. It can be a depolarization.
b. It can be a hyperpolarization.
c. It can be summated.
d. It has a refractory period.
e. It occurs in a specialized area of the membrane.
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Question 9) Where is the optic chiasm located?
a. underneath the hypothalamus
b. underneath the pons
c. underneath the brain stem
d. in the occipital lobe
e. in the visual cortex
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Question 10) In divergence,
a. many presynaptic neurons synapse with one postsynaptic cell
b. one dendrite contacts many presynaptic neurons
c. action potentials initiated in the axon diminish as they spread to axon terminals
d. one axon synapses with many other cells
e. many axons spread out from one cell body
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