Of or pertaining to the cerebral cortex and the brainstem, especially with regard to the corticobulbar tract, a white matter pathway connecting the two.(adjective)
Wiktionary.org : Text is available under the Creative Commons Attribution-ShareAlike License
Use "corticobulbar" in a sentence
"The two pyramids contain the motor fibers which pass from the brain to the medulla oblongata and medulla spinalis, corticobulbar and corticospinal fibers."