1. Neuro Quiz The Motor System Click to Play!  Michael McKeough 2016

2. Used with permission of the Academy of Neurologic Physical Therapy of the APTA Do not duplicate without acknowledging Learning Activity author Michael McKeough, PT, EdD

3. Motor System 100 200 300 400 500 Dorsolateral Motor System
Ventromedial
Motor Neurons
Misc.
Motor
Control
Centers
100
200
300
400
500
Motor System
Categories:
Dorsolateral Motor System Ventromedial Motor System
Motor Neurons
Miscellaneous
Motor Control Centers

4. Dorsolateral Motor System 100
Learned, willed, skilled movements, particularly of the hand.
What are the types of movement (functions) controlled by the dorsolateral motor system?
Dorsolateral Motor System for 100
Learned, willed, skilled movements, particularly of the hand.
What are the types of movement (functions) controlled by the dorsolateral motor system?
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5. Dorsolateral Motor System 200
The cell bodies of these neurons are located in somatically organized areas of the precentral gyrus.
The axons of these neurons travel in the lateral corticospinal tract.
Dorsolateral Motor System for 200
The cell bodies of these neurons are located in somatically organized areas of the precentral gyrus.
The axons of these neurons travel in the lateral corticospinal tract.
What are upper motor neurons?
What are upper motor neurons?
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6. Dorsolateral Motor System 300
The cell bodies of these neurons are located in somatically organized areas of the ventral horn.
The axons of these neurons travel in the peripheral nervous system and innervate skeletal muscle.
Dorsolateral Motor System for 300
The cell bodies of these neurons are located in somatically organized areas of the ventral horn.
The axons of these neurons travel in the peripheral nervous system and innervate skeletal muscle.
What are lower motor neurons?
What are lower motor neurons?
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7. Dorsolateral Motor System 400
Upper motor neurons cross the midline (decussate) after passing through this structure.
What is the medullary pyramid?
Dorsolateral Motor System for 400
Upper motor neurons cross the midline (decussate) after passing through this structure.
What is the medullary pyramid?
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8. Dorsolateral Motor System 500
Approximately 10% of upper motor neurons have this relationship with lower motor neurons.
What are monosynaptic connections?
Dorsolateral Motor System for 500
Approximately 10% of upper motor neurons have this relationship with lower motor neurons.
What are monosynaptic connections?
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9. Ventromedial Motor System 100
These are the types of movement (functions) controlled by the ventromedial motor system.
What are tone, posture, and associative movement?
Ventromedial Motor System for 100
These are the types of movement (functions) controlled by the ventromedial motor system.
What are tone, posture, and associative movement?
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10. Ventromedial Motor System 200
These tracts comprise the ventromedial motor system.
What are the tectospinal, reticulospinal, vestibulospinal, and ventral (anterior) corticospinal tracts?
Ventromedial Motor System for 200
These tracts comprise the ventromedial motor system.
What are the tectospinal, reticulospinal, vestibulospinal, and ventral (anterior) corticospinal tracts?
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11. Ventromedial Motor System 300
Upper motor neurons in the ventromedial motor system terminate here.
What are the ventromedial lower motor neuron pools, bilaterally?
Ventromedial Motor System for 300
Upper motor neurons in the ventromedial motor system terminate here.
What are the ventromedial lower motor neuron pools, bilaterally?
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12. Ventromedial Motor System 400
This tract is located in the anterior column (funiculus) and consists of upper motor neurons originating in the ipsilateral primary motor cortex.
Ventromedial Motor System for 400
This tract is located in the anterior column (funiculus) and consists of upper motor neurons originating in the ipsilateral primary motor cortex.
What is the ventral (anterior) corticospinal tract?
What is the ventral (anterior) corticospinal tract?
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13. Ventromedial Motor System 500
This pathway originates in the brainstem, descends in the lateral column (funiculus) and is concerned with the control of posture (particularly extensor muscles) as well as the coordination of head and eye movement.
Ventromedial Motor System for 500
This pathway originates in the brainstem, descends in the lateral column (funiculus) and is concerned with the control of posture (particularly extensor muscles) as well as the coordination of head and eye movement.
What is the lateral vestibulospinal tract?
What is the lateral vestibulospinal tract?
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14. Motor Neurons 100
They convey movement commands from motor control centers in the cortex and brainstem to lower motor centers located at segmental levels of the neuraxis.
Motor Neurons for 100
They convey movement commands from motor control centers in the cortex and brainstem to lower motor centers located at segmental levels of the neuraxis.
What are upper motor neurons ?
What are upper motor neurons ?
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15. Motor Neurons 200
They are located in the peripheral nervous system and convey movement commands from cranial nerve nuclei or the ventral horn of the spinal cord to skeletal muscle in the head and body, respectively.
Motor Neurons for 200
They are located in the peripheral nervous system and convey movement commands from cranial nerve nuclei or the ventral horn of the spinal cord to skeletal muscle in the head and body, respectively.
What are lower motor neurons ?
What are lower motor neurons ?
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16. Motor Neurons 300
They are located in the peripheral nervous system and convey movement commands from cranial nerve nuclei or the ventral horn of the spinal cord to extrafusal muscle fibers in the head and body, respectively.
Motor Neurons for 300
They are located in the peripheral nervous system and convey movement commands from cranial nerve nuclei or the ventral horn of the spinal cord to extrafusal muscle fibers in the head and body, respectively.
What are alpha lower motor neurons ?
What are alpha lower motor neurons?
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17. Motor Neurons 400 What are beta lower motor neurons?
They are located in the peripheral nervous system and convey movement commands from segmental motor control centers to intra- and extrafusal muscles fibers, simultaneously.
They couple the alpha and gamma motor systems
They are more common in reptiles than mammals.
Motor Neurons for 400
They are located in the peripheral nervous system and convey movement commands from segmental motor control centers to intra- and extrafusal muscles fibers, simultaneously.
They couple the alpha and gamma motor systems
They are more common in reptiles than mammals.
What are beta lower motor neurons ?
What are beta lower motor neurons?
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18. Motor Neurons 500
They increase the sensitivity of intrafusal muscles fibers to the phasic portion of a change in muscle length.
What are dynamic gamma motor neurons?
Motor Neurons for 500
They increase the sensitivity of intrafusal muscles fibers to the phasic portion of a change in muscle length.
What are dynamic gamma motor neurons?
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19. Miscellaneous 100
This physiological mapping of the cortex depicts a distorted representation of the body.
Body parts are portrayed proportional to the amount of brain space dedicated to the control of movement of that body part.
Miscellaneous for 100
This physiological mapping of the cortex depicts a distorted representation of the body
Body parts are portrayed proportional to the amount of brain space dedicated to the control of movement of that body part.
What is the motor homunculus?
What is the motor homunculus?
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20. Miscellaneous 200
This spinal pathway originates in the contralateral cerebral cortex and is concerned with the control of manipulation and fractionated movement of distal limb segments (particularly the hand).
Miscellaneous for 200
This spinal pathway originates in the contralateral cerebral cortex and is concerned with the control of manipulation and fractionated movement of distal limb segments (particularly the hand).
What is the lateral corticospinal tract?
What is the lateral corticospinal tract?
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21. Miscellaneous 300
This pathology causes brain damage that produces limitations in the ability to move due to paresis and spasticity.
The movement deficits caused by this pathology appear on the side of the body opposite the brain damage.
Miscellaneous for 300
This pathology causes brain damage that produces limitations in the ability to move due to paresis and spasticity.
The movement deficits caused by this pathology appear on the side of the body opposite the brain damage.
What is a stroke or cerebrovascular accident?
What is a stroke or cerebrovascular accident?
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22. Miscellaneous 400
The type of hand movement controlled by the corticospinal tract.
Independent control of individual digits including terminal opposition of the thumb and individual digits.
Miscellaneous for 400
The type of hand movement controlled by the corticospinal tract.
Independent control of individual digits including terminal opposition of the thumb and individual digits.
What is the fractionated movement?
What is the fractionated movement?
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23. Miscellaneous 500
This system auto-regulates (reflexively) joint position.
This system provides feedback about the alpha motor system (muscle tension and muscle length).
Miscellaneous for 500
This system auto-regulates (reflexively) joint position.
This system provides feedback about the alpha motor system (muscle tension and muscle length).
What is the gamma motor system?
What is the gamma motor system?
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24. Motor Control Centers 100 Located in the precentral gyrus.
Somatotopically organized.
Controls learned, willed, skilled movements of the contralateral body.
Motor Control Centers for 100
Located in the precentral gyrus.
Somatotopically organized.
Controls learned, willed, skilled movements of the contralateral body.
What is the primary motor cortex?
What is the primary motor cortex?
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25. Motor Control Centers 200 Located in the cortex of the frontal lobe.
Responsible for controlling voluntary eye movement.
What is the frontal eye field?
Motor Control Centers Located in the cortex of the frontal lobe.
Responsible for controlling voluntary eye movement.
What is the frontal eye field?
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26. Motor Control Centers 300
Located in the cortex of the frontal lobe, usually in the left hemisphere.
Responsible for speech production.
Lesions here cause non-fluent (productive) aphasia.
Motor Control Centers for 300
Located in the cortex of the frontal lobe, usually in the left hemisphere.
Responsible for speech production.
Lesions here cause non-fluent (productive) aphasia.
What is Brocha’s area?
What is Brocha’s area?
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27. Motor Control Centers 400
Located at the base of the telencephalon in both hemispheres.
Responsible for controlling initiation, termination, and scaling of internally generated movements.
Lesions here cause Parkinson's disease.
Motor Control Centers for 400
Located at the base of the telencephalon in both hemispheres.
Responsible for controlling initiation, termination, and scaling of internally generated movements.
Lesions here cause Parkinson's disease.
What are the basal ganglia?
What are the basal ganglia?
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28. Motor Control Centers 500
Located on the dorsal surface of the brainstem.
Responsible for the timing and coordination of complex movements and detecting movement errors.
Motor Control Centers for 500
Located on the dorsal surface of the brainstem.
Responsible for the timing and coordination of complex movements and detecting movement errors.
What is the cerebellum?
What is the cerebellum?
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