FMA definition : Tract of brain, each instance of which is a collection of some corticospinal and cortibulbar
nerve fibers that crossover at the level of the pyramids in some medulla oblongata;
it is a collection of some upper motor neuron fibers which go to some spinal cord
(corticospinal) or some brainstem (corticobulbar) and control the motor function of
some body.;
Tract of brain, each instance of which is a collection of some corticospinal and cortibulbar
nerve fibers that crossover at the level of the pyramids in some medulla oblongata;
it is a collection of some upper motor neuron fibers which go to some spinal cord
(corticospinal) or some brainstem (corticobulbar) and control the motor function of
some body.