Neuro Quiz3 Block2 Key
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Transcript of Neuro Quiz3 Block2 Key
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1.
Dopamine is found in neurons in the substantia nigra and
a.
Area postrema
b.
Locus ceruleus
c.
Red nucleusd.
Superior colliculus
e.
Ventral tegmental area
2.
A patient is found to have a tumor growing in his interpeduncular fossa. The following is NOT a
symptom that you would expect to see:
a.
Blink reflex
b.
Contralateral flaccid hemiparesis of both limbs
c.
Contralateral lower face weakness
d.
Contralateral spastic hemiparesis of both limbs
e.
Patient can wrinkle his forehead
3.
Concerning the image to the right, the midbrain
continuations of the outlined fibers are found in the
a.
Left cerebral peduncle
b.
Left lateral lemniscus
c.
Reticular formation
d.
Right cerebral peduncle
e.
Right lateral lemniscus
4.
In a neurology rotation, a resident tells you that you will help her take care of a patient who has
central midbrain syndrome from a burst branch of the posterior cerebral artery. She tells you
that the patient has a contralateral tremor and ataxia due to destruction of the red nucleus and
its connections with the cerebellum, a down and out left eye, a loss of pupillary constriction in
the left eye, a drooping left eyelid and loss of discriminative touch on the right side of the body.
The patient has gone to have her brain imaged. You anticipate correctly that the lesion will
involve the ____________________.
a.
Bilateral periaqueductal gray
b.
Left side of the cerebral peduncles and ocular motor nerve
c.
left side of the periaqueductal gray and central tegmentum
d.
Right side of the cerebral peduncles and ocular motor nerve
e.
Right side of the periaqueductal gray and central tegmentum
5.
Neurons containing serotonin are found in the ___________________.
a.
EdingerWestphal nucleus
b.
Lateral zone of the reticular formation
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c.
Raphe nuclei
d.
Substantia nigra
e.
Ventral tegmental area
6.
The receptive or sensory part of the reticular formation is found _____________.
a.
anteriorly
b.
in the midline
c.
laterally
d.
medially
e.
posteriorly
7.
The following is not true about the norepeinephrine (noradrenergic) system of the reticular
formation:
a.
It projects to widespread regions of the cerebral cortex
b.
Moderate firing of its neurons helps us focus attentionc.
Intense firing of its neurons keeps us focused on one particular task
d.
Its connections to the thalamus helps keep us awake
e.
Its rate of firing is influenced by catecholamine levels
8.
Which of the following regions is the most important for horizontal eye movements (tracking)?
a.
Rostral Interstitial Nucleus
b.
Paramedian Pontine Reticular Formation
c.
Frontal Eye Fields
d.
Temporal Eye Fields
e.
Temporal Eye Fields
9.
A bilateral lesion of the medial longitudinal fasciculus will cause which if the following effects?
a.
Inability to raise eyes bilaterally
b.
Inability to medially rotate the right eye when laterally rotating the left eye
c.
Inability to medially rotate both eyes upon convergence
d.
Inability to perform rotatory movements of either eye
e.
Gaze paralysis
10.
The defect seen when moving a penlight from the unaffected eye to the affected eye causing
dilation of the pupil is called:
a.
An Argyll-Robertson pupil d. Parinauds syndrome
b.
A Marcus-Gunn pupil e. Claudes syndrome
c. Adies Pupil
11.
This neuron development migration factor always causes repulsion of the growth cone:
a. Ephrin b. Semaphorin c. Reelin d. Netrin
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12.
Closure of the neural tube should be complete by the:
a. 2nd
week of development b. 4th
week of development
c. 6th
week of development d. 8th
week of development
13.
A total absence of reelin in the brain of developing mice causes which of the following?
a. Increased number of growth cones
b. A complete lack of decussation of ascending fibers
c. A complete lack of decussation of descending fibers
d. Inversion of the cortical layers
14.
Neural crest cells migrate to form all of the following cell types, EXCEPT:
a. Schwann cells b. Melanocytes c. Cells of the Adrenal Cortex
d. Dorsal root ganglion cells e. Autonomic ganglion cells for Auerbachs and Meissners plexus
15.
The efferent fibers from the cerebellum travel primarily through the:
a. Superior Cerebellar Peduncle b. Middle Cerebellar Peduncle
c. Inferior Cerebellar Peduncle d. Cerebral Peduncle
16.
Which of the following cells types are found in the granular layer of the cerebellar cortex?
a. Basket Cells b. Purkinje Cells c. Golgi Cells d. Stellate Cells
17.
The deep cerebellar nuclei are labeled from medial to lateral:
a. Dentate,Globose, Emboliform, Fastigial
b. Fastigial, Globose, Emboliform, Dentate
c. Dentate, Emboliform, Globose, Fastigial
d. Emboliform, Globose, Fastigial, Dentate
18.
Which of the following afferent cerebellar pathways is correct:
a. Corticopontocerebellar via climbing fibers to the ipsilateral cortex
b. Cerebro-olivocerebellar via mossy fibers to the contralateral cortex
c. Posterior spinocerebellar via mossy fibers to the contraleral cortex
d. Vestibulo-cerebellar via mossy fibers to the flocculonodular lobe
e. Anterior spinocerebellar via climbing fibers to the contralateral cortex
19.
Diseases of the cerebellum will cause all of the following signs, EXCEPT:
a. Nystagmus b. Ataxia c. Impairment in Dysdiadochokinesia
d. Rigidity e. Intentional tremors
20.
The output from the Purkinje fibers is excitatory: a. True b. False
