VASCULAR NETWORKS OF THE NUCLEUS-LENTIFORMIS

The nucleus lentiformis vascular networks were studied in 30 brains by injecting the vascular system with gelatinous Indian ink. The nucleus lentiformis is divided into a medial part, the globus pallidus, and a lateral part, the putamen. These two parts differ completely from one another in their embryology, structure and functions. For these reaso ns, each part presents a specific vascular network. The putaminal netw ork is dense and shows many similarities with the cerebral cortex vasc ular network; the pallidal one is simpler and less dense. These two va scular networks are located close to each other without overlapping. T heir specificity may be in relation with the histological structure, w ith the morphogenetic evolution or with the functional activity of bot h nuclei to which they provide the vascularization.