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肋間內肌

肋間內肌
肋間內肌(紅色),後方
基本信息
起點英语Anatomical terms of muscle#Insertion_and_origin肋骨-上緣
終點英语Anatomical terms of muscle#Insertion_and_origin肋骨-下緣
动脉肋間動脈
神经肋間神經
相關動作英语Kinesiology保持肋骨穩定
拮抗肌英语Antagonist (muscle)肋間外肌
标识字符
拉丁文Musculi intercostales interni
TA98A04.4.01.013
TA22312
FMAFMA:74085
格雷氏p.403
肌肉解剖学术语英语Anatomical terms of muscle

肋間內肌,亦稱內肋間肌internal intercostal muscles,intercostales interni)在肋骨間,為骨骼肌的一個肌群。兩邊各有11塊肌肉。胸骨為起點,在真肋的軟骨間的肋間隙中,以及假肋的軟骨的末端,向後延伸至肋骨的角度。所以肋間內肌通過腱膜延續到脊椎, 稱爲後肋間膜。

结构

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肋間內肌的纤维是傾斜的,與肋間外肌一樣,但方向與肋間外肌相反

在大多数情况下,它们是呼出動作的肌肉。呼气时,肋间内部肌肉的骨间部分(位于上肋骨和下肋骨之间的部分肌肉)会压低并收缩肋骨,收縮胸腔并排出空气。[1]但是,肋間內肌仅在强力呼气時使用,例如咳嗽或运动中,而不用于正常的呼吸。[2]但肋间外肌和肋间内肌的软骨间部分(位于上肋骨和下肋骨的软骨部分之间的肌肉)可通过提高肋骨和扩大胸廓腔,從而幫助吸入。 [3]

附加图片

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参考文献

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本條目包含來自屬於公共領域版本的《格雷氏解剖學》之內容,而其中有些資訊可能已經過時。

  1. ^ Basic Human Anatomy - O'Rahilly, Müller, Carpenter & Swenson[页码请求]
  2. ^ Anatomy and Physiology: The Unity of Form and Function 5th Edition by Kenneth Saladin[页码请求]
  3. ^ The Action of the Internal Intercostals. www.yorku.ca. [2020-07-06]. (原始内容存档于2020-11-17). 

外部链接

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肋間內肌
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