4933859
Descripción
Test por Zoila Rojas, actualizado hace más de 1 año
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Creado por Zoila Rojas
hace más de 8 años
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Pregunta 1
Pregunta
How many neurons are there in pathways that transmit conscious awareness of sensation?
Respuesta
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2
-
1
-
3
-
4
Pregunta 2
Pregunta
The cell bodies of first order neurons for somatosensory pathways to the cerebrum are located in this...
Respuesta
-
dorsal horn
-
dorsal root ganglion
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dorsal column nuclei
-
dorsal roots
Pregunta 3
Pregunta
The second order neurons of somatosensory pathways to the cerebrum always...
Respuesta
-
have axons that cross the midline
-
synapse contralateral to first order axon
-
synapse at level of closed medulla
-
have cell bodes in dorsal horn
Pregunta 4
Pregunta
The dorsal column medial lemniscal pathway...
Respuesta
-
conducts mechanosensation
-
has a single thalamic target
-
when injured causes deficits in two point discrimation
-
all of these are true
Pregunta 5
Pregunta
Mechanosensation from the right arm travels up the...
Respuesta
-
left fasciculus gracilis
-
left fasciculus cuneatus
-
right fasciculus cuneatus
-
right fasciculus gracilis
Pregunta 6
Pregunta
Mechanosensation from the sacral region travels...
Respuesta
-
up fasciculus gracilis where it synapses with second order neurons at nucleus gracilis and crosses via the anterior part of medial lemniscus
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up fasciculus cuneatus where it synapses with second order neurons at nucleus cuneatus and crosses via the posterior part of medial lemniscus
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up fasciculus gracilis where it synapses with second order neurons at nucleus cuneatus and crosses via the anterior part of medial lemniscus
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up fasciculus gracilis where it synapses with second order neurons at nucleus fasciculus and crosses via the posterior part of medial lemniscus
Pregunta 7
Pregunta
Axons on the posterior most part of the right medial lemniscus in the closed medulla are...
Respuesta
-
carrying mechanosensation from left cervical and thoracic regions
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carrying mechanosensation from right cervical and thoracic regions
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carrying mechanosensation from right lumbar and sacral regions
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carrying mechanosensation from left lumbar and sacral regions
Pregunta 8
Pregunta
The third order neurons of the dorsal column medial lemniscal pathway...
Respuesta
-
have cell bodies in VPM thalamus
-
enter the cerebral cortex via the superior cerebellar peduncle
-
terminate at lower 2/3rds of brodman's area 3, 1, and 2
-
none of these are true
Pregunta 9
Pregunta
Which of these is true about the anterior spinothalamic and dorsal column medial lemniscal pathway?
Respuesta
-
They both have a single termination at VPL thalamus
-
Their second order neurons are located on the dorsal horn of the spinal cord
-
For both pathwyas information on spinal cord is organized somatotopically with cervical information being more medial and sacral information more lateral
-
both of their first order neurons are located in the DRG
Pregunta 10
Pregunta
Pain fibers that travel via anterior spinothalamic tract...
Respuesta
-
have their first synapse in the dorsal horn in region called substantia gelatinosa
-
that are damaged may never recover when there is damage to anterior spinothalamic tract
-
travel much faster than mechanosensation in dorsal column medial leminscal pathway
-
none of these are true
Pregunta 11
Pregunta
Second order neurons in anterior spinothalamic tract...
Respuesta
-
cross the midline via the anterior white comissure
-
travel in the spinal cord at the spinothalamic tract
-
synapse directly with third order neurons in VPL thalamus
-
all of these are true
Pregunta 12
Pregunta
In what region does the antero-lateral fasciculus become the spinothalamic tract?
Respuesta
-
closed medulla
-
open medulla
-
pons at middle cerebellar peduncle
-
above level of T6
Pregunta 13
Pregunta
What is the caudal most level in which damage to both the dorsal column medial lemniscus and anterior spinothalamic pathways causes contralateral sensory deficits?
Respuesta
-
closed medulla
-
cervical level
-
thoracic level
-
open medulla
Pregunta 14
Pregunta
At the pontine level the mechanosensation from the cervical region is located
Respuesta
-
medially
-
anteriorly
-
posteriorly
-
laterally
Pregunta 15
Pregunta
At the level of the midbrain the mechanosensation of the sacral region in the medial lemniscus is most...
Respuesta
-
medial
-
lateral
-
anterior
-
posterior
Pregunta 16
Pregunta
Two important collateral targets at the midbrain for the spinothalamic tract are the...
Respuesta
-
deep layer of superior colliculus and central gray
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deep layer of inferior colliculus and red nucleus
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edinger westphal nucleus and trigeminal motor nucleus
-
none of these
Pregunta 17
Pregunta
Before the synapsing at the VPL thalamus, the 2nd order axons of both the dorsal column medial lemniscus and anterior spinothalamic pathways pass through this structure in the midbrain that is lateral to the red nucleus.
Respuesta
-
central gray
-
prerubral field
-
subthalamic nucleus
-
reticular formation
Pregunta 18
Pregunta
Which of these is not a termination of the spinothalamic tract in the brainstem?
Respuesta
-
central gray
-
hypothalamus
-
medial part of thalamus
-
red nucleus
Pregunta 19
Pregunta
The information that is sent in the axons that are traveling within fasciculus gracilis will most likely have their terminations in what region of the cerebral cortex?
Respuesta
-
post central gyrus near the vertex
-
post central gyrus adjacent to the temporal lobe
-
post central gyrus between the vertex and area adjacent to temporal lobe
-
post central gyrus slightly below the vertex
Pregunta 20
Pregunta
All primary afferents of the trigeminal nerve have their cell bodies in the trigeminal (semilunar) ganglion.
Respuesta
- True
- False
Pregunta 21
Pregunta
Which part of the trigeminal nuclei runs between the pons and midbrain?
Respuesta
-
mesencephalic nucleus of V
-
trigeminal ganglion
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principal sensory nucleus of V
-
motor nucleus of V
Pregunta 22
Pregunta
The afferents of cell bodies located in the trigeminal ganglion terminate at the...
Respuesta
-
mesencephalic nucleus of V
-
spinal nucleus of V
-
dorsal horn of spinal cord
-
motor nucleus of V
Pregunta 23
Pregunta
The motor nucleus of V contains cell bodies for afferents that...
Respuesta
-
innervate muscle of facial expression
-
innervate tongue muscles
-
innervate muscles of mastication
-
innervate muscles of deglutition
Pregunta 24
Pregunta
Just as in the spinal cerebral sensory pathways, there are three neurons for trigeminal cerebral pathways.
Respuesta
- True
- False
Pregunta 25
Pregunta
At the level of the closed medulla...
Respuesta
-
principal sensory nucleus of V has adjacent region called substantia gelatinosa
-
you will see the spinal nucleus of V along with spinal tract of V
Pregunta 26
Pregunta
Which of these structures is continuous with the dorsal horn?
Respuesta
-
spinal nucleus of V
-
mesencephalic nucleus of V
-
substantia gelatinosa
-
no structures are continuous with dorsal horn
Pregunta 27
Pregunta
Second order neurons of trigeminal pathway synapse at [blank_start]VPM thalamus[blank_end].
Respuesta
-
VPM thalamus
Pregunta 28
Pregunta
This pathways has its primary afferents in the trigeminal ganglion. It then sends an axon to synapse at principal sensory nucleus of V. Axon of second order neuron synapses directly at VPM thalmus. Which is this pathway?
Respuesta
-
spinothalamic pathway
-
rostral trigeminal pathway
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caudal trigeminal pathway
-
visceral pathway
Pregunta 29
Pregunta
Where do first order neurons that transmit pain sensation via the caudal trigeminal-thalamic pathway synapse?
Respuesta
-
most rostral part of spinal nucleus of V
-
pars caudalis of spinal nucleus of V
-
primary sensory of V
-
mesencephalic of V
Pregunta 30
Pregunta
Neurons that communicate position sense of the jaw....
Respuesta
-
have their 1st order neurons in the trigeminal ganglion
-
have axons of their first order neurons pass through the trigeminal ganglion
-
have the axons of 1st order neurons synapse at rostral part of spinal nucleus of V
-
have 2nd order cell bodies located in the mesencephalic nucleus of V
Pregunta 31
Pregunta
How many neurons are in the spino-cerebellar pathways?
Respuesta
-
1
-
2
-
3
-
4
Pregunta 32
Pregunta
1st order neurons of the spinal cerebellar pathways synapse ipsilaterally.
Respuesta
- True
- False
Pregunta 33
Pregunta
Compared to the dorsal column medial lemniscus pathway the dorsal-cuneo spinocerebellar pathway...
Respuesta
-
is separated by lower and upper extremeties
-
carries information about pain and temperature
-
crosses the midline in the medulla
-
none of these are true.
Pregunta 34
Pregunta
The cuneo cerebellar pathways sends information levels ...... in the spinal cord, synapsing then traveling to the ..... cerebellum via the ......
Respuesta
-
above T3....ipsilateral....inferior cerebellar penduncle
-
above T3....ipsilateral....accessory cuneate nucleus
-
above T6....contralateral....inferior cerebellar peduncle
-
above T6....ipsilateral....accessory cuneate nucleus
Pregunta 35
Pregunta
Where do fibers from the cuneu-cerebellar pathway that enter at levels C6 synapse?
Respuesta
-
accessory cuneate nucleus
-
nucleus cuneatus
-
deep nuclei of cerebellum
-
column of clarke
Pregunta 36
Pregunta
Nucleus cuneatus is to accessory nucleus as nucleus gracilis is to....
Respuesta
-
spinal nucleus of V
-
column of clarke
-
substantian nigra
Pregunta 37
Pregunta
The first order neuron for the information that goes from the lower limbs to the cerebellum is located...
Respuesta
-
in the accessory cuneate nucleus
-
column of clark
-
nucleus gracilis
-
medial part of dorsal column medial lemniscus
Pregunta 38
Pregunta
Visceral information from cranial nerves VII, IX and X synapse at the
Respuesta
-
nucleus ambigiuus
-
nucleus solitarus
-
nucleus gracilis
-
central gray
Pregunta 39
Pregunta
The axons from the nucleus solitarus projects to....
Respuesta
-
VPM
-
hypothalamus
-
amygdala
-
all of these
Pregunta 40
Pregunta
The process of stereognosis is mediated between what two regions of the cerebral cortex?
Respuesta
-
posterior parietal and postcentral gyrus
-
postcentral gyrus and precentral gyrus
-
SII and postcentral gyrus
-
anterior parietal and precentral gyrus
Pregunta 41
Pregunta
Descending projections from primary sensory cortex to brainstem and spinal cord aid in the process of...
Respuesta
-
stereognosis
-
selective attention
-
sensory association
-
orientation and direction of stimuli
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