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额肌

额肌
左边顶端显示于红色的额肌
基本信息
起点英语Anatomical terms of muscle#Insertion_and_origin帽状腱膜
终点英语Anatomical terms of muscle#Insertion_and_origin眼轮匝肌[1]
动脉眶上动脉和滑车上动脉
神经颜面神经颞支英语Temporal branches of the facial nerve
相关动作英语Kinesiology皱起前额和提起眉毛
标识字符
拉丁文Venter frontalis musculi occipitofrontalis
TA98A04.1.03.004
TA22056
FMAFMA:46757
格雷氏p.379
肌肉解剖学术语英语Anatomical terms of muscle

额肌(Frontalis muscle)是一块薄薄的人体肌肉,位于前额,呈四边形,且紧密地附着在浅筋膜上。额肌比枕肌更宽,其纤维长度更长、颜色更白。

它并不附着任何骨质。

额肌中央的部分纤维和降眉间肌相连,其边缘纤维更和皱眉肌眼轮匝肌边缘相混合,再会合眉毛之处的皮肤,[2]其侧面纤维也和在额骨颧突上的后面肌肉会合。

额肌的主要功能就在于提起眉毛(相对于眼窝部分的眼轮匝肌),尤其当眼睛朝上看或眼前事物太远、太暗时起作用,人在感觉诧异的时候也会收缩额肌。[3]另一个看似无用的作用是把头皮向前拉,相反于枕肌收缩的动作。[4]

从这些连接处纤维都直接向上,并会合冠状缝下帽状腱膜。

两块额肌的边缘部分在鼻子根部一段距离之上互相连起来,不过在两块枕肌之间却有一处可观但可变的间隔处,而此处是帽状腱膜。

某些资料并不列额肌为单一的肌肉,但为枕额肌的一部分。

图片

参见

参考资料

  1. ^ "Insertion of frontalis muscle relating to blepharoptosis repair". Hwang K, Kim DJ, Hwang SH. J Craniofac Surg. 2005 Nov;16(6):965-7.
  2. ^ "eye, human."Encyclopædia Britannica. 2008. Encyclopædia Britannica 2006 Ultimate Reference Suite DVD 5 Apr. 2008
  3. ^ Ibid
  4. ^ 《人体学习百科》—猫头鹰出版社

外部链接

本条目包含来自属于公共领域版本的《格雷氏解剖学》之内容,而其中有些信息可能已经过时。

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额肌
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