Biomechanics Nervous System

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created 6 years ago by hoovemaa
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1

voluntary muscle activation occurs through what?

motor units

2

intramuscular coordination

increase excitatory input to motor neuron pool leading to increased # of active motor units and increase motor unit firing

more for general force production

3

intermuscular coordination

more optimal activation of agonist and relaxation of antagonists

trained by practicing the exact task upon which you want to improve

4

muscle spindle reflex

monitor muscle length and rate of stretch

when agonist is stretched it monosynaptically excites the MN pool of that muscle and other agonists

activation is larger with larger/faster stretch

5

golgi tendon organ reflex

monitors tension in the muscle

responds much more to active tension as opposed to passive tension

6

GTO activation leads to what?

inhibition of the agonist and excitation of the antagonist

7

vestibular reflex

3 inner ear proprioceptors

saccule-sense vertical linear direction

utricle-senses horizontal linear acceleration

8

how does inner ear vestibular reflex work?

acceleration moves endolymph which bends hair cells and provides information to CNS

9

vestibular system is crucial for what?

balance, especially in decreased visual conditions

10

tonic neck reflex

neck flexion excites pulling muscles, extension excites pushing muscles