Methods Twenty-two adult cadaver heads fixed in 10% methanal were dissected under the operating microscope.Red latex was injected into the artery and blue latex into vein.

• 方法用10%25甲醛固定的成人头颅湿标本22例,分别在动脉系统与静脉系统中灌注红、蓝乳胶铸型,在手术显微镜下观察海绵窦及其相邻结构。