
The pyramidal tracts refer to both the corticospinal and corticobulbar tracts. These are aggregations of upper motor neuron nerve fibres that travel from the cerebral cortex and terminate either in the brainstem (corticobulbar) or spinal cord (corticospinal) and are involved in control of motor functions of the body. The corticobulbar tract conduc...
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http://en.wikipedia.org/wiki/Pyramidal_tracts

collections of motor nerve fibers arising in the brain and passing down through the spinal cord to motor cells in the anterior horns.
Found on
http://www.encyclo.co.uk/local/21001
No exact match found.