Inferior view of the common temporal artery. This artery originated in the transition between the P2A and P2P segments. The hippocampal artery originates from the common temporal artery, and the posterolateral choroidal artery from the P2P segment. 1, P2A segment; 2, anterior temporal artery; 3, common temporal artery; 4, hippocampal artery; 5, medial temporal artery; 6, posterior temporal artery; 7, P2P segment; 8, P3 segment; 9, posterolateral choroidal artery; 10, dentate gyrus. (Image courtesy of E de Oliveira)