 |  | | MOTOR NEURONS
Reserver Hotels Interlaken The nerves that carry the stimuli that cause your body's muscles to contract are MOTOR neurons. Their structure is different from sensory neurons. The cell body or perikaryon (A) is filled with chromatophilic substances which pick up the stain in this micrograph. The cell's axon can not be distinguished from its dendrites in the micrograph. B marks the axon and dendrite threads. The "C's" marks the neuroglia cells (dark spots) and the neurofibrils.
MOTOR END PLATE
Skeletal muscles (C) are stimulated by nerve impulses carried by motor neurons. An axon (A) that carries the impulse away from the nerve body ends in little pads on muscle fibers called motor end plates (B).
SPINAL CORD
"A" marks the central canal. "B" is the anterior medial fissure. The posterior medial sulcus is not seen in this preparation. C is the posterior horn composed of axons of the sensory neuron. D is the anterior horn composed of the cell bodies of motor neurons. C and D are gray matter. Outside the horns and the commissure that connects them is the white matter.
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