#1 In the condition , a virus infects dorsal root ganglia, causing a painful ras
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Question
#1 In the condition , a virus infects dorsal root ganglia, causing a painful rash whose distribution corresponds to that of the affected sensory neryes as seen in their dermatomes.
A) Hodgkin's disease
B) myasthenia gravis
C) chickenpox
D) shingles
E) neuronal damage
#2 Sensory information from skeletal musdes travels over _ fibers.
A) type A
B) type B
C) type C
D) type D
E) type E
#3 The medulla oblongata regulates
A) blood pressure.
B) food intake.
C) respiration.
D) both A and B
E) both A and C
#4 Samples of CSF for diagnostic purposes are normally obtained by placing the tip of a needle in the
A) araduroid mater.
B) epidural space.
C) cerebral ventricles.
D) dura mater.
E) subarachnoid space.
#5 Damage to the substantia nigra causes a decrease in the neurotransmitter dopamine. This causes a
graduaf generalized increase in muscle tone, which is the main symptom of
A) rabies.
B) tetanus.
C) Parkinson disease.
D) myasthenia gravis.
E) Alzheimer disease.
#6 The ion that triggers the release of acetylcholine into the synaptic cleft is
A) sodium.
B) drloride.
C) calcium.
D) potassium.
E) magnesium.
#7 Bill contracts a viral disease that destroys cells in the posterior gray horns in his spinal cord. As a
result, whidr of the following would you expect?
A) inability tobreathe
B) loss of sensation in his torso
C) problems with moving his legs
D) uncontrollable sweating of his feet
E) problems with moving his arms
#8 Many medications introduced into the bloodstream cannot directly affect the neurons of the CNS because
A) ependymal cells restrict the flow of interstitial fluid between the capillaries and the neurons.
B) astrocytes form a capsule around neurons.
C) oligodendrocytes form a continuous myelin sheath around the axons.
D) the neurolemma is impermeable to most molecules.
E) the endothelium of cNS capillaries forms a blood-brain barrier
#9 Cholinergic synapses release the neurotransmitter
A) acetylcholine.
B) adrenalin.
C) serotonin.
D) norepinephrine.
E) GABA.
#10 The cerebellum relies on in-formation from
A) proprioceptive sensations.
B) the eyes.
C) motor commands from upper motor neurons.
D) the irmer ear as movements are under wav.
E) all of the above
#11 Terry suffers from dissociation of memories from their emotional content as the result of an
automobile accident. What system of the brain is probably damaged?
A) the prefrontal lobe
B) the putamen
C) the general interpretive area
D) the limbic system
E) the thalamus
#12 The reflex that prevents a muscle from exerting too much tension is the _____ reflex.
A) crossed extensor
B) reciprocal
C) stretch
D) flexor
E) tendon
#13 The ____ division of the autonomic nervous system is said to function during "rest and digest."
A) thoracolumbar
B) sympathetic
C) parasympathetic
D) visceral
E) somatomotor
#14 The layer of the meninges that closely follows every gyrus and sulcus is the
A) dura mater.
B) aradrroid membrane.
C) subaradmoid mater.
D) neural cortex.
E) pia mater.
Explanation / Answer
1-d) shingles
2-a) type A
3-e) both respiration and blood pressure
4-e)subarachnoid space
5-c) Parkinson disease
6-c) calcium
7-b) loss of sensation in his torso
8-b) astrocytes form a capsule around neurons
9-a) acetylcholine
10-d) the inner ear as movements are under way
11-d) the limbic system
12-e) tendon
13-c) parasympathetic
14-e) pia mater
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