Tapetum corporis callosi: carpet of the brain

The tapetum is described by Johann Christian Rell (1759-1813). It is formed primarily by decussating fibers in the splenium of the corpus callosum that arch over the atrium of the lateral ventricle and course inferiorly in the lateral wall of the posterior, and somewhat into the temporal horns, of the lateral ventricle. The term of tapetum was discussed from etymological and anatomical points of view.