Transcript The Somatic Sensory System: Quiz Game

The Somatic Sensory
System
Neuro Quiz
Identify the correct question
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 Michael McKeough 2008
Somatic Sensory System
Neuro Quiz
Physiology
DCML
Spinothalamic
System
Trigeminal
System
Pathology
100
100
100
100
100
200
200
200
200
200
300
300
300
300
300
400
400
400
400
400
500
500
500
500
500
Click category value to begin.
Physiology
100
This constitutes information for the
sensory system.
What is a significant change in energy
level?
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Physiology
200
This is defined as the energy change
sufficient to cause receptors to
generate a receptor potential.
What is an adequate stimulus?
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Physiology
300
These neurons relay information from
receptors in the periphery into the CNS.
Their cell bodies are located in DRG or
CNN.
They are pseudo-monopolar cells.
What are first-order neurons?
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Physiology
400
This is the process by which sensory
receptors transform changes in the
adequate stimulus into changes in
neuronal discharge (electrochemical
energy).
What is information transduction?
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Physiology
500
This is the form of energy to which
skin, muscle, and joint receptors are
most sensitive.
What is mechanical deformation?
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DCML
100
These are the sensory modalities to
which the DCML is selectively
sensitive.
What are discriminative tactile sense,
conscious proprioception, vibration,
and stereognosis?
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DCML
200
This is the spinal pathway by which
discriminative tactile information from
the upper extremity is conveyed.
It is located laterally in the dorsal
column, from T6 and above.
What is the fasciculus cuneatus?
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DCML
300
This is the thalamic relay center for the
DCML.
It contains the cell bodies of thirdorder neurons.
What is the ventral posterior lateral
(VPL) nucleus?
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DCML
400
Third-order neurons projecting from
the thalamus to the primary sensory
cortex pass through this area.
This white matter area separates the
thalamus from the caudate nucleus.
What is the internal capsule?
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DCML
500
This construct depicts the somatotopic
organization of the primary sensory
cortex.
It portrays a distorted representation of
the body where body parts are portrayed
proportional to the amount of brain space
dedicated to the control of that body part.
What is the sensory homunculus?
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Spinothalamic System
100
The modalities to which the
spinothalamic system is most sensitive.
What are pain and temperature from
the contralateral body?
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Spinothalamic System
200
The component of the spinothalamic
system that conveys information about
slow (clinical) pain.
What is the paleospinothalamic tract?
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Spinothalamic System
300
At or about the level of entry.
What is the level of the neuraxis at
which this system crosses the midline
(decussates)?
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Spinothalamic System
400
The thalamic relay center by which
information about pain and
temperature makes its way into the
limbic system.
What is the intralaminar nucleus ?
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Spinothalamic System
500
The type of organization found
throughout this system.
Helps account for why patients may
have difficulty localizing the source
of their pain.
What is not somatotopically
organized?
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Trigeminal System
100
The modalities to which the trigeminal
system is most sensitive.
What are pain and temperature from the
contralateral face?
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Trigeminal System
200
The dermatomes of the face.
What are the ophthalmic, maxillary,
and mandibular?
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Trigeminal System
300
The pathway by which first-order
neurons project to second-order
neurons.
What is the descending tract of the
trigeminal nerve (CN V)?
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Trigeminal System
400
The location of the cell bodies of
second-order neurons in the central
trigeminal system.
What is the spinal nucleus of the
trigeminal system?
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Trigeminal System
500
The thalamic relay center for trigeminal
information in route to the primary
sensory cortex.
What is the ventral posteromedial
(VPM) nucleus?
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Pathology
100
Following a lesion of the primary
sensory cortex, the side of the body on
which sensory impairments appear.
What is contralateral or opposite?
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Pathology
200
The inability to recognize objects by
their tactile qualities in the absence of
vision.
What is astereognosis?
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Pathology
300
The leading theory of analgesia.
Pain relief is produced by the activation
of the periaqueductal gray nucleus and
release of encephalon.
Encephalons lodge in postsynaptic
receptor sites of transmission neurons
blocking the uptake of transmitter
substance from first-order neurons.
What is the opiate theory?
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Pathology
400
Symptoms of this condition include:
Spastic paralysis on the same side as the lesion.
 Absence of discriminative tactile, vibration, and
conscious proprioception sensation on the same
side as the lesion.
 Absence of pain and temperature sensation on the
side opposite the lesion.

What is a hemisection of the spinal
cord or Brown-Sequard syndrome?
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Pathology
500
Symptoms of this condition include:
Absence of pain and temperature sensation
in the ipsilateral face and contralateral body.
 Loss of corneal reflex, ipsilaterally.
 Nystagmus and ataxia.

What is lateral medullary or
Wallenberg syndrome?
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