Figure 113

Schematic diagram showing arrangement of motor and sensory neurons. The cell body of a motor neuron is located in the ventral (anterior) horn of the gray matter of the spinal cord. Its axon, surrounded by myelin, leaves the spinal cord via a ventral (anterior) root and becomes part of a spinal nerve that carries it to its destination on striated (skeletal) muscle fibers. The sensory neuron originates in the skin within a receptor (here, a Pacinian corpuscle) and continues as a component of a spinal nerve, entering the spinal cord via the dorsal muscle dorsal root ganglion cell body of sensory neuron ventral root

Pacinian corpuscle

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