12/2/21, 1:57 PM KIN 313 midterm material Flashcards | Quizlet
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KIN 313 midterm material
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Terms in this set (93)
- all motor neurons that innervate a specific muscle
Define a motor neuron pool
- motor neurons that go down to muscle
where do cell bodies reside ? in ventral/anterior horn
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-in columns, by function
how are cell bodies grouped? - for proximal muscles, found more medially
- for distal muscles found more laterally
- motor neuron (cell body, axon, dendrites) and all muscle fibres it
What is a motor unit?
innervates
how many muscle fibres does a single -many
motor neuron innervate? - varies depending on type of muscle
muscle unit all the muscle fibers innervated by 1 motor neuron
1. slow oxidative (SO)
what are the 3 types of skeletal muscle
2. fast oxidative glycolytic (FOG)
fibers?
3. fast glycolytic fibres (FG)
KIN 313 midterm material
https://quizlet.com/ca/616326580/kin-313-midterm-material-flash-cards/ 1/11
, 12/2/21, 1:57 PM KIN 313 midterm material Flashcards | Quizlet
what is the input resistance like for small - bigger, easier to elicit
MU? - due to high input resistance and slow conduction velocity
- why?
- physiological, quantal response of MU to stimulation
Twitch - key to starting movement
- what does it consist of? change in force over time **
consists of rise in force, peak force and relaxation
which motor neuron supplies fast twitch large MN
fibres?
which motor neuron supplies slow twitch small MN
fibres?
how are motor units grouped? based on behaviour/function
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Twitch characteristics of slow contracting, - slow to reach peak, slow to dissipitate
FR fibres - long twitch
twitch characteristics of fast contracting, - quick to reach peak, quick to dissipitate
FR fibres - greater force at peak than slow contracting
what determines the physiological - the neuron and muscle fibres they connect with
behaviour of the 3 types of MU (slow
contracting FR, fast contracting FR and fast
contracting FF) ?
KIN 313 midterm material
https://quizlet.com/ca/616326580/kin-313-midterm-material-flash-cards/ 2/11
Study sets, textbooks, questions
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Ends in 03d 10h 02m 19s
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KIN 313 midterm material
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Terms in this set (93)
- all motor neurons that innervate a specific muscle
Define a motor neuron pool
- motor neurons that go down to muscle
where do cell bodies reside ? in ventral/anterior horn
AD
LENOVO.COM
Get rid of old tech.
-in columns, by function
how are cell bodies grouped? - for proximal muscles, found more medially
- for distal muscles found more laterally
- motor neuron (cell body, axon, dendrites) and all muscle fibres it
What is a motor unit?
innervates
how many muscle fibres does a single -many
motor neuron innervate? - varies depending on type of muscle
muscle unit all the muscle fibers innervated by 1 motor neuron
1. slow oxidative (SO)
what are the 3 types of skeletal muscle
2. fast oxidative glycolytic (FOG)
fibers?
3. fast glycolytic fibres (FG)
KIN 313 midterm material
https://quizlet.com/ca/616326580/kin-313-midterm-material-flash-cards/ 1/11
, 12/2/21, 1:57 PM KIN 313 midterm material Flashcards | Quizlet
what is the input resistance like for small - bigger, easier to elicit
MU? - due to high input resistance and slow conduction velocity
- why?
- physiological, quantal response of MU to stimulation
Twitch - key to starting movement
- what does it consist of? change in force over time **
consists of rise in force, peak force and relaxation
which motor neuron supplies fast twitch large MN
fibres?
which motor neuron supplies slow twitch small MN
fibres?
how are motor units grouped? based on behaviour/function
Upgrade to remove ads Only CA$44.99/year
Twitch characteristics of slow contracting, - slow to reach peak, slow to dissipitate
FR fibres - long twitch
twitch characteristics of fast contracting, - quick to reach peak, quick to dissipitate
FR fibres - greater force at peak than slow contracting
what determines the physiological - the neuron and muscle fibres they connect with
behaviour of the 3 types of MU (slow
contracting FR, fast contracting FR and fast
contracting FF) ?
KIN 313 midterm material
https://quizlet.com/ca/616326580/kin-313-midterm-material-flash-cards/ 2/11
