THE COLORED LINES SHOW THE PATH OF THE CORTICOSPINAL TRACT (one of the main components of the pyramidal system) FROM THE MOTOR CORTEX DOWN THROUGH THE: MIDBRAIN, PONS, MEDULLA, AND SPINAL CORD (EACH REPRESENTED BY ONE CROSS-SECTION ABOVE).
Pyramidal system:
consists of upper motor neurons extending from the cortex to the brainstem or spinal cord that make up two major pathways of voluntary movement: the corticospinal and corticobulbar tracts (sometimes called the pyramidal tracts).
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