Methods : 45 corpses of adult persons were dissected to explore the left and right venae jugularis externa venae subclavia venae brachiocephalicae and venae cava superior and to measure their legth and included angle .

方法：取经福尔马林防腐固定的45例90侧成人尸体进行解剖，暴露左、右颈外静脉， 锁骨 下静脉，头臂静脉和上腔静脉，用游标卡尺， 二角规， 量角器测量其长度和夹角。