| The latter intersects various projection and commissural fibers, including those crossing to the opposite hemisphere in the anterior commissure. |
| At their commissure, the lips should initiate a very slight pouch which should stay firm. |
| The upper lip largely covering the lower lip the lower lip with slak mucous membranes forms a very loose labial commissure. |
| The oral commissure prosthesis is used to prevent microstomia when trauma involving the corners of the mouth or circumoral tissue has occurred. |
| The column of the fornix has been divided a short distance above the anterior commissure. |
| The corpus callosum is not formed till after the anterior commissure and fornix. |
