Local Control of Motor NeuronsRelaypointsforinstructionstothemotorneuronsfromcentershigher inthe motor control hierarchyInterneuronsandlocalafferentinputMostdirectinputtomotorneuronscomesfromlocalinterneurons,receiveinputfrom1)peripheralreceptors,2)descending pathways,and'3)other interneurons.Thereflexes- The stretchreflex- The flexion reflex- crossed extensor reflex
Local Control of Motor Neurons • Relay points for instructions to the motor neurons from centers higher in the motor control hierarchy. • Interneurons and local afferent input Most direct input to motor neurons comes from local interneurons → receive input from 1) peripheral receptors, 2) descending pathways, and 3) other interneurons. • The reflexes - The stretch reflex - The flexion reflex - crossed extensor reflex
Local Control of Motor NeuronsThe stretch reflexProprioceptors Receptors-muscle spindle(Length-monitoring systems)tendon organ (tension-monitoring systems)Motorneuronsa motor neuron and y motor neuron
Local Control of Motor Neurons • The stretch reflex • Proprioceptors Receptors - muscle spindle (Length-monitoring systems) - tendon organ (tension-monitoring systems) • Motor neurons - α motor neuron and γ motor neuron