what is the process of the corticobulbar tract

A. to carry unconscious /voluntary motor information from the pre-central gyrus up to, but not including the ventral horn . The track then synapses onto motor spinal nerves that innovate skeletal muscles

B. to descend from corticospinal track and project onto certain cranial nerve nuclei that have motor components. This track controls cranial nerves and lower motor neurons

C. proprioceptors that are located in the skeletal muscles that provide a constant flow of information on the muscles