The glottis is
A) the soft tissue that hangs off the end of the soft palate.
B) a flap of elastic cartilage.
C) the opening to the larynx.
D) the opening to the pharynx.
E) part of the hard palate.
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Question 2) Parasympathetic effects are localized and short-lived because
A) muscarinic receptors are deactivated by norepinephrine.
B) acetylcholine is inactivated at the synapse by acetylcholinesterase.
C) norepinephrine hyperpolarizes the postganglionic membrane.
D) norepinephrine is inactivated at the synapse by monoamine oxidase.
E) epinephrine blocks the muscarinic receptors.
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Question 3) Accidently sending fluid up out of the nose happens when the ________ fails to close off the ________.
A) epiglottis; larynx
B) epiglottis; nasopharynx
C) soft palate; nasopharynx
D) soft palate; larynx
E) soft palate; oropharynx
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Question 4) The statement Preganglionic axon terminals release acetylcholine is
A) true only for the parasympathetic nervous system.
B) true only for the sympathetic nervous system.
C) true for both the parasympathetic and sympathetic nervous systems.
D) not true for either the parasympathetic or sympathetic nervous systems.
E) true only for the somatic nervous system.
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Question 5) Air flows between nasal conchae through the
A) dorsum nasi.
B) apex.
C) external nares.
D) nasal vestibule.
E) superior, middle, and inferior nasal meatuses.
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Question 6) Muscarinic receptors
A) are normally activated by acetylcholine.
B) are found mostly in autonomic ganglia.
C) always produce an excitatory response.
D) control sodium channels in the affected membrane.
E) are blocked by norepinephrine.
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Question 7) Which bone does not form part of the lateral or superior walls of the nasal cavity?
A) maxilla
B) mandible
C) nasal
D) ethmoid
E) sphenoid
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Question 8) Nicotinic receptors
A) respond to epinephrine.
B) respond to norepinephrine.
C) open chemically-gated sodium ion channels.
D) can be either excitatory or inhibitory in function.
E) are found at synaptic junctions of the sympathetic nervous system.
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Question 9) The nasal cavity opens into the nasopharynx through a connection known as the
A) oropharynx.
B) nasal meatus.
C) nasal vestibule.
D) internal nares.
E) auditory canal.
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Question 10) The statement Its postganglionic axons always use acetylcholine as the neurotransmitter is
A) true only for the parasympathetic nervous system.
B) true only for the sympathetic nervous system.
C) true for both the parasympathetic and sympathetic nervous systems.
D) not true for either the parasympathetic or sympathetic nervous systems.
E) true only for the somatic nervous system.
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