5438531
Descripción
Test por Daniel Whiting, actualizado hace más de 1 año
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Creado por Daniel Whiting
hace más de 10 años
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Pregunta 1
Pregunta
Axons in the corticobulbar tract terminate in.
Respuesta
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The brainstem
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The spinal cord
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Extrafusal muscle fibres
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Intrafusal muscle fibres
Pregunta 2
Pregunta
The relatively large cells in layer 5 of the primary motor cortex.
Respuesta
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Betz cells
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Non-Betz cells
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Neurons
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White matter
Pregunta 3
Pregunta
Axons in the corticospinal tract terminate in.
Respuesta
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Intrafusal muscle fibres
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Extrafusal muscle fibres
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The spinal cord
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The brainstem
Pregunta 4
Pregunta
Neurons in the primary cortex require very low intensity stimulation for activation and have a stimulation to muscle response delay of about...
Respuesta
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10ms
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1s
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1 microsecond
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30 seconds
Pregunta 5
Pregunta
A single upper motor neuron is thought to control.
Respuesta
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A specific muscle
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A specific movement
Pregunta 6
Pregunta
An upper motor neuron will fire more or less often when the direction of movement is near their prefferred direction?
Respuesta
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Less
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More
Pregunta 7
Pregunta
The population vector is...
Respuesta
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An individual neurons preferred direction
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The exact direction of a neurons specific direction
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The sum of each individual neurons firing rate for a movement direction
Pregunta 8
Pregunta
Neurons in the pre-motor cortex are thought to fire...
Respuesta
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When planning a movement
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When performing a movement
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After a movement
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In response to spiders
Pregunta 9
Pregunta
Muscles in the face and neck are controlled by axons from the.
Respuesta
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Corticobulbar tract
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Corticospinal tract
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Reflexive muscle fibres
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The medial superior olive
Pregunta 10
Pregunta
The proximal and distal muscles are controlled by the axons from
Respuesta
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The corticospinal tract
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The corticobulbar tract
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The medial superior olive (MSO)
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The lateral superior olive (LSO)
Pregunta 11
Pregunta
Axons in the corticospinal tract have what characteristic?
Respuesta
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A latency of about 70ms
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They control facial and neck muscles
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90% of axons cross the midline
Pregunta 12
Pregunta
The muscle field is?
Respuesta
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The group of muscles controlled by a given upper neuron
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A motor unit
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An alpha motor neuron
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The specific muscle controlled by an upper motor neuron
Pregunta 13
Pregunta
Mirror neurons fire...
Respuesta
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When watching a movement and while also performing the same movement
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Only when watching a movement
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Only when performing a movement
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In response to non-movement stimuli
Pregunta 14
Pregunta
Spike triggered averaging is used to correlate muscle contractions with stimulation of upper motor neurons.
Respuesta
- True
- False
Pregunta 15
Pregunta
Posture stabilizing actions in secondary muscles occur in response to the primary movement...
Respuesta
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Before the movement occurs
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After the movement occurs
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At the same time as the movement
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Only as nessesary
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