What are commissures which includes the corpus callosum?

The correct answer to this question is D, Thick bundles of fibers that allow communication between the brain’s hemispheres. This term is used in various fields such as biology and anatomy. Commissure is when two objects are joined. In mind, there are five commissures, which are habenular commissure, anterior commissure, corpus callosum, posterior commissure, and commissure of fornix.

The brain commissure has fiber tacts. These tacts are connected to the cerebral hemispheres. It is the spinal cord as well and has a white commissure and gray commissure. The term commissures can apply to the junction of the lower and upper lips, lower and upper eyelids, and a birds beak.