Reflexes Flashcards
5 Types of Reflexes
Stretch Inverse Gamma Reflex Flexor Withdrawal Crossed Extension
Stretch Stimulus
Muscle Stretch
Stretch Reflex Arc
Afferent 1a fiber from muscle spindle –> alpha motor neurons –> muscle of origin
Is stretch reflex polysynaptic or monosynaptic
Monosynaptic
How is stretch reflex clinically tested?
DTR
Stretch reflex reciprocal inhibition
Via inhibitory interneuron. Same stretch stimulus inhibits antagonist muscle
Stretch reflex reciprocal innervation
Effects f a stretch simulus on agonist, antagonist ad synergistic muscles
Stimulus for Inverse stretch reflex
Muscle Contraction
Reflex arc for inverse stretch reflex
Afferent Ib fiber from golgi tendon orgon via inhibitory interneuron to muscle or oigin
Is inverse stretch reflex monosynaptic or poly?
Polysynatpic
Stretch reflex is part of which loop?
Gamma reflex
Which loop allows muscle tension to come under control of descending pathways?
Gamma reflex loop
Stimulus for flexor withdrawal reflex?
Cutaneous sensory stimuli
REflex arc for flexor withdrawal reflex
Cutatneous receptors via interneurons to largely flxor muscles
Is flexor withdrawal mono or polysnaptic?
Polysnaptic
Function of flexor reflex?
Protective withdrawal mechanism to remove body part from harmful stimuli
Crossed extension reflex stimulus
Noxious stimuli and reciprocal action of antagonist (Flexors on one side excited, so extensors inhibit and opposite on other side)
Reflex arc of crossed extension reflex
Cutaneous and muscle receptors meet sC motor neurons
Crossed extension reflex mono or polysynaptic?
Polysnaptic
Which reflex controls gait?
Crossed extension
