Local Afferent Input

As just noted, afferent fibers usually impinge upon the local interneurons (in one case, they synapse directly on motor neurons). The afferent fibers bring information from receptors in three areas: (1) the very muscles controlled by the motor neurons, (2) other nearby

Descending pathway

Joint receptor

Skin receptor

Tendon receptor

Descending pathway

Joint receptor

Skin receptor

Insecticide Synapse 2013

Other spinal levels

Muscle receptor

(from antagonistic muscle)

Other spinal levels

Muscle receptor

(from antagonistic muscle)

Interneuron

Motor neuron

Neurons ending with:

excitatory synapse inhibitory synapse r r

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Essentials of Human Physiology

Essentials of Human Physiology

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