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Upper Motor Neuron Control of the Brainstem and Spinal Cord
Description
Bachelors Degree COGS100 Quiz on Upper Motor Neuron Control of the Brainstem and Spinal Cord, created by Daniel Whiting on 16/05/2016.
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cogs100
cogs100
bachelors degree
Quiz by
Daniel Whiting
, updated more than 1 year ago
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Created by
Daniel Whiting
over 8 years ago
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Resource summary
Question 1
Question
Axons in the corticobulbar tract terminate in.
Answer
The brainstem
The spinal cord
Extrafusal muscle fibres
Intrafusal muscle fibres
Question 2
Question
The relatively large cells in layer 5 of the primary motor cortex.
Answer
Betz cells
Non-Betz cells
Neurons
White matter
Question 3
Question
Axons in the corticospinal tract terminate in.
Answer
Intrafusal muscle fibres
Extrafusal muscle fibres
The spinal cord
The brainstem
Question 4
Question
Neurons in the primary cortex require very low intensity stimulation for activation and have a stimulation to muscle response delay of about...
Answer
10ms
1s
1 microsecond
30 seconds
Question 5
Question
A single upper motor neuron is thought to control.
Answer
A specific muscle
A specific movement
Question 6
Question
An upper motor neuron will fire more or less often when the direction of movement is near their prefferred direction?
Answer
Less
More
Question 7
Question
The population vector is...
Answer
An individual neurons preferred direction
The exact direction of a neurons specific direction
The sum of each individual neurons firing rate for a movement direction
Question 8
Question
Neurons in the pre-motor cortex are thought to fire...
Answer
When planning a movement
When performing a movement
After a movement
In response to spiders
Question 9
Question
Muscles in the face and neck are controlled by axons from the.
Answer
Corticobulbar tract
Corticospinal tract
Reflexive muscle fibres
The medial superior olive
Question 10
Question
The proximal and distal muscles are controlled by the axons from
Answer
The corticospinal tract
The corticobulbar tract
The medial superior olive (MSO)
The lateral superior olive (LSO)
Question 11
Question
Axons in the corticospinal tract have what characteristic?
Answer
A latency of about 70ms
They control facial and neck muscles
90% of axons cross the midline
Question 12
Question
The muscle field is?
Answer
The group of muscles controlled by a given upper neuron
A motor unit
An alpha motor neuron
The specific muscle controlled by an upper motor neuron
Question 13
Question
Mirror neurons fire...
Answer
When watching a movement and while also performing the same movement
Only when watching a movement
Only when performing a movement
In response to non-movement stimuli
Question 14
Question
Spike triggered averaging is used to correlate muscle contractions with stimulation of upper motor neurons.
Answer
True
False
Question 15
Question
Posture stabilizing actions in secondary muscles occur in response to the primary movement...
Answer
Before the movement occurs
After the movement occurs
At the same time as the movement
Only as nessesary
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