Editing Internal capsule (section)

===Genu===
The '''genu''' is the bend, or flexure in the V of the internal capsule. It is formed by fibers from the [[corticobulbar tract]]. The fibers in this region are named the [[geniculate fibers]] that carry [[upper motor neuron]]s from the [[motor cortex]] to [[cranial nerve nuclei]] that mainly govern muscle motion of the head and face. The geniculate fibers originate in the motor cortex, and after passing downward through the base of the [[cerebral peduncle]] with the [[cerebrospinal fibers]], undergo [[decussation]] and end in the motor nuclei of the [[cranial nerve]]s of the opposite side.