The cerebrospinal fibers, derived from the cells of the motor area of the
cerebral cortex
The cerebral cortex, also known as the cerebral mantle, is the outer layer of neural tissue of the cerebrum of the brain in humans and other mammals. The cerebral cortex mostly consists of the six-layered neocortex, with just 10% consistin ...
,
occupy the middle three-fifths of the base; they are continued partly to the
nuclei of the motor cranial nerves
A cranial nerve nucleus is a collection of neurons (gray matter) in the brain stem that is associated with one or more of the cranial nerves. Axons carrying information to and from the cranial nerves form a synapse first at these nuclei. Lesion ...
, but mainly into the pyramids of the
medulla oblongata.
References
Central nervous system
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