References. 1  Hess CL, Howard MA, Attinger CE. 2  McCulloch J. Physical modalities in wound management: ultrasound, Vasopneumatic devices and hydrotherapy. 3  Davis SC, Ovington LG.  Dyson M. Therapeutic application of ultrasound.
The three major sensory tracts involve chains of neurons â¢ First-order neuron â¢ Delivers sensations to the CNS â¢ The cell body is in the dorsal or cranial root ganglion â¢ Second-order neuron â¢ An interneuron with the cell body in the spinal cord or brain â¢ Third-order neuron â¢ Transmits information from the thalamus to the cerebral cortex. 1  Comments.
The anterior horn cells, although technically part of the central nervous system (CNS), are sometimes discussed with the peripheral nervous system because they are part of the motor unit. In the peripheral nervous system, bundles of nerve ï¬bers or axons conduct information to and from the central nervous system.