Muscle Spindle - Senses changes is muscle length
Intrafusal fibers run paralles to muscle fiers (extrafusal)
Activates alpha motor neuron
Innervated by gamma motor neuron
Has static and dyanamic sensors
Finer the movement, more the fibers
Stretch reflex - when a muscle is passively stretched, stretch reflex comes into play and contracts the muscle. effected by muscle spindle - monosynaptic - knee jerk reaction
Golgi tendon - Changes in muscle tension
Inhibits alpha motor neuron
Golgi tendon reflex - opposite of stretch reflex - when a muscle contracts, the reflex makes it relax - disynaptic - knife clasp reaction.
Flexor withdrawal reflex - pain - polysynaptic - ipsilateral flexion - contralateral extension
Intrafusal fibers run paralles to muscle fiers (extrafusal)
- nuclear bag fibres - fast changes
- nuclear chain - static changes
Activates alpha motor neuron
Innervated by gamma motor neuron
Has static and dyanamic sensors
Finer the movement, more the fibers
Stretch reflex - when a muscle is passively stretched, stretch reflex comes into play and contracts the muscle. effected by muscle spindle - monosynaptic - knee jerk reaction
Golgi tendon - Changes in muscle tension
Inhibits alpha motor neuron
Golgi tendon reflex - opposite of stretch reflex - when a muscle contracts, the reflex makes it relax - disynaptic - knife clasp reaction.
Flexor withdrawal reflex - pain - polysynaptic - ipsilateral flexion - contralateral extension
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