闊背肌(latissimus dorsi),是將手臂向下和下後拉的背部肌肉。這兩塊三角肌各有一闊端附着於脊椎和骨盆帶上,較窄的一端則在肩下延伸到肱骨。其拉丁語(及英語)名稱「latissimus dorsi」意為「背部之最寬闊者」。闊背肌可支撐舉過頭部的手臂,並將手臂從抬高的位置向下移動。如果你手臂用力向側面伸開,就會感到闊背肌的繃緊。
闊背肌 | |
---|---|
基本資訊 | |
起點 | Spinous processes of vertebrae T7-L5, thoracolumbar fascia, iliac crest, inferior 3 or 4 ribs and inferior angle of scapula |
終點 | Floor of intertubercular groove of the humerus |
動脈 | Thoracodorsal branch of the subscapular artery |
神經 | Thoracodorsal nerve (C6, C7, C8) |
相關動作 | Adducts, extends and internally rotates the arm when the insertion is moved towards the origin. When observing the muscle action of the origin towards the insertion, the lats are a very powerful rotator of the trunk. |
拮抗肌 | Deltoid and chest |
標識字符 | |
拉丁文 | Musculus latissimus dorsi |
TA98 | A04.3.01.006 |
TA2 | 2231 |
FMA | FMA:13357 |
《肌肉解剖學術語》 [在維基數據上編輯] |
來源
- 《人體學習百科》,貓頭鷹出版社,ISBN 957-9684-11-1
外部連結
- 解剖學(Anatomy)-肌肉(muscle)-Latissimus Dorsi Muscle(闊背肌) (頁面存檔備份,存於互聯網檔案館)
- latissimus dorsi 於 GPnotebook
- Anatomy figure: 01:03-08 at Human Anatomy Online, SUNY Downstate Medical Center - "Superficial layer of the extrinsic muscles of the back."
- 橫截面圖像:pembody/body8a - 維也納醫科大學生物塑化實驗室提供
這是一篇關於肌肉的小作品。您可以透過編輯或修訂擴充其內容。 |
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