Vascularization

Abstract

The superficial (leptomeningeal) vessels and the intrahippocampal (deep) vessels are successively studied. The hippocampal arteries arise mainly from the posterior cerebral artery and to a lesser degree from the anterior choroidal artery. Three hippocampal arteries usually vascularize the hippocampus: the anterior, middle, and posterior hippocampal arteries. These arteries arise directly from the trunk of the posterior cerebral artery or from its inferior temporal branches. The superficial hippocampal veins have a simpler more typical aspect than the arteries. They form two longitudinal superficial venous arches covering the fimbriodentate sulcus and the superficial hippocampal sulcus.