arm bone

同根派生

The scapula is a triangular bone.
肩胛骨是一個(gè)三角形骨。
The angulation of the pelvis and femur corresponds to that of the shoulder and upper arm.
骨盆與大腿骨的角度同肩胛骨與上臂骨的角度協(xié)調(diào)。
The humerus is the long bone of the arm.
肱骨是上臂的長(zhǎng)骨。
The antigravity shoulder muscles prepare to bring the arm to shelf level,and the hand is prepositioned and oriented to prepare forgrasp-ing.
儅伸手動(dòng)作展開(kāi)時(shí)，前肋骨側(cè)邊的肌肉及上下頸部斜方肌會(huì)同時(shí)收縮使肩胛拉開(kāi)曏上，而鏇轉(zhuǎn)環(huán)膜會(huì)讓肱骨呈外鏇的姿勢(shì)，竝使得肱骨頭置入關(guān)節(jié)窩。