Question: The statement “it controls the diameter of the pupil” is
Answer Choices: true only for the sympathetic nervous system.
true for both the parasympathetic and sympathetic nervous systems.
true only for the parasympathetic nervous system.
not true for either the parasympathetic or sympathetic nervous systems.
true only for the somatic nervous system.
Answer: B – true for both the parasympathetic and sympathetic nervous systems
Question: Dual innervation refers to an organ receiving
Answer Choices: nerves from both the brain and the spinal cord.
two nerves from the spinal cord.
both sensory and motor nerves.
both autonomic and somatomotor nerves.
both sympathetic and parasympathetic innervation.
Answer: E – both sympathetic and parasympathetic innervation
Question: Drugs known as beta-blockers may be useful for treating
Answer Choices: diarrhea.
prostate disorders.
excessive heart rate.
constipation.
excessive salivation.
Answer: C – excessive heart rate
Question: Olfactory information is first received by which part of the brain?
Answer Choices: medulla oblongata
frontal lobe
cerebrum
parietal lobe
cerebellum
Answer: C – cerebrum
Question: Sympathetic preganglionic neurons are ____ and have ____ axons.
Answer Choices: long; myelinated
long; unmyelinated
short; unmyelinated
intermediate; white
short; myelinated
Answer: E – short; myelinated
Question: Preganglionic fibers leave the CNS and then synapse on
Answer Choices: visceral reflex responses.
motor neurons.
ganglionic neurons.
afferent neurons.
postganglionic fibers.
Answer: C – ganglionic neurons
Question: The ____ division of the autonomic nervous system is said to function during “rest and digest.”
Answer Choices: somatomotor
visceral
parasympathetic
thoracolumbar
sympathetic
Answer: C – parasympathetic
Question: The parasympathetic nervous system is especially active during which physiological state(s)?
Answer Choices: digestion
exertion
exercise
trauma
stress
Answer: A – digestion
Question: In the sympathetic nervous system, where are the preganglionic neurons located?
Answer Choices: sacral segments of the spinal cord
thoracic and lumbar segments of the spinal cord
cerebellum.
cervical and sacral segments of the spinal cord
brain stem
Answer: B – thoracic and lumbar segments of the spinal cord
Question: Nicotinic receptors
Answer Choices: are found at neuroeffector junctions of the sympathetic nervous system.
respond to epinephrine.
open chemically-gated sodium ion channels.
are found at neuroeffector junctions of the parasympathetic nervous system.
respond to norepinephrine.
Answer: C – open chemically-gated sodium ion channels
Question: The function of the auditory tube is to:
Answer Choices: equalize air pressure on both sides of the tympanic membrane.
help maintain equilibrium.
amplify sounds.
redistribute endolymph after hearing a sound.
provide a passageway for sound waves to enter the ear.
Answer: A – equalize air pressure on both sides of the tympanic membrane
Question: Sympathetic preganglionic neurons are ____ and have ____ axons.
Answer Choices: long; myelinated
long; unmyelinated
short; unmyelinated
intermediate; white
short; myelinated
Answer: E – short; myelinated
Question: The sympathetic division of the ANS is also known as which of the following?
Answer Choices: craniosacral division
thoracolumbar division
somatic division
lumbosacral division
resting division
Answer: B – thoracolumbar division
Question: Preganglionic neurons of the autonomic nervous system are located in
Answer Choices: the cerebrum.
the lateral gray horns of the spinal cord.
both the brain and the lateral gray horns of the spinal cord.
the brain.
the posterior gray horns of the spinal cord.
Answer: C – both the brain and the lateral gray horns of the spinal cord
Question: Preganglionic neurons of the sympathetic nervous system are located in the
Answer Choices: lateral gray horns of segments T1 to L2 of the spinal cord.
lateral gray horns of T1 to S? of the spinal cord.
anterior gray horns of the cervical and thoracic spinal cord.
anterior gray horns of segments T1 to L2 of the spinal cord.
lateral gray horns of the cervical cord.
Answer: A – lateral gray horns of segments T1 to L2 of the spinal cord
Question: Muscarinic receptors
Answer Choices: are normally activated by acetylcholine.
are found mostly in autonomic ganglia.
always produce an excitatory response.
are blocked by norepinephrine.
control sodium channels in the affected membrane.
Answer: A – are normally activated by acetylcholine