Arteriovenous communications in the human brain.
D001163:Arteriovenous Anastomosis / Q000033:anatomy & histology*; D001921:Brain / Q000098:blood supply*; D002343:Carotid Artery, Internal / Q000033:anatomy & histology; D002560:Cerebrovascular Circulation; D006801:Humans; D007601:Jugular Veins / Q000033:anatomy & histology; D008863:Microspheres; D013116:Spinal Cord / Q000098:blood supply*