The corticobulbar tracts originate from the ______ region of the motor homunculus within the primary cortex.
A)cardiac
B)facial
C)palmar
D)genitalia
E)respiratory

Question

Quizplus · Accepted Answer

The corticobulbar tracts originate from the facial region of the motor homunculus within the primary cortex. The term "bulbar" refers to the brainstem, specifically the cranial nerve nuclei. Thus the corticobulbar tracts are a collection of nerve fibers that begin in the motor cortex and descend to synapse onto cranial nerves in the brainstem that control movements of the face, head, and neck.

The Corticobulbar Tracts Originate from the ______ Region of the Motor