Which part of the corpus callosum is located most posteriorly?

Which part of the corpus callosum is located most posteriorly?

• A. Splenium
• B. Genu
• C. Rostrum
• D. Body

Answer: (A)

The splenium is the most posterior part of the corpus callosum. It forms the rounded back end of this large white-matter tract that connects the two hemispheres, sitting behind the body and toward the occipital lobes. The other portions sit more toward the front or along the middle: the genu is the anterior bend, the rostrum is the small forward-downward extension at the bottom front, and the body runs through the center between the genu and splenium. So, the posterior-most segment is the splenium, which houses fibers linking the occipital lobes across hemispheres.

The splenium is the most posterior part of the corpus callosum. It forms the rounded back end of this large white-matter tract that connects the two hemispheres, sitting behind the body and toward the occipital lobes. The other portions sit more toward the front or along the middle: the genu is the anterior bend, the rostrum is the small forward-downward extension at the bottom front, and the body runs through the center between the genu and splenium. So, the posterior-most segment is the splenium, which houses fibers linking the occipital lobes across hemispheres.