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下直肌

下直肌
眼睛的上视图(显示著下直肌与它的旋转轴)
其它肌肉为上斜肌
基本信息
起点英语Anatomical terms of muscle#Insertion_and_origin眶尖的总腱环英语Annulus of Zinn
终点英语Anatomical terms of muscle#Insertion_and_origin角膜缘英语Corneal limbus下面的6.5mm处
神经动眼神经的下支
相关动作英语Kinesiology下转和内收(内侧动作英语Anatomical terms of motion)眼睛
标识字符
拉丁文musculus rectus inferior bulbi
TA98A15.2.07.011
TA22043
FMAFMA:49036
格雷氏p.1022
肌肉解剖学术语英语Anatomical terms of muscle

下直肌(Inferior rectus muscle)是眼窝里的肌肉。就大多数眼窝的肌肉而言,它也是受动眼神经(第三对脑神经)所支配。它的功能是帮助眼球做出下转、内收及外旋的动作。当瞳孔完全外展时下直肌是唯一能够使瞳孔下转的肌肉。[1]

结构

功能

图片

参见

参考资料

  1. ^ Eye Theory. Cim.ucdavis.edu. [2010-11-27]. (原始内容存档于2014-05-27). 

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下直肌
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