Spinal Reflexes Flashcards
Monosynaptic Reflex
alpha motor neuron contracts agonist muscle
Reciprocal Inhibition
Efferent impulses to antagonost muscles are damped
Inverse Stretch Reflex
Golgi tendon organ relfex
Caused by afferent nerves from GTO
Protective mechanism
Effects of increasing firing APs from GTO
Activation of inhibitory interneurons to agonist
Activation of excitatory interneurons to antagonistic muscles
Alpha motor neuron is inbited
Muscle is relaxed
Flexor (Withdrawal) Reflex
Uses information from nociceptors
Polysynaptic
Effects of painful stimulus
Increased activity in the flexor muscles via excitatory muscles
Contralateral extensors are excited
Contralateral flexors are inhibited
Purpose of contralateral limb
Maintain upright posture
How is the GTO reflex overidden
Voluntary input from the CNS