arachnoid,medulla

arachnoid : illustration for trauma magazine 2015.
an arachnoid granulation is visible in the center.
extraaxial cysts:arachnoid cyst 蛛网膜囊肿
【arachnoid】 - pte备考词汇
临床医学 脑和脊髓的被膜血管ppt 2, 脊髓蛛网膜 spinal arachnoid