The Muscles of Back
• Deep group
– Splenius 夹肌 – Erector spinae 竖脊肌
• Position: fills the vertebral groove on each side of the spine
• Action: both sides together extends vertebral column and head. acting along,
– Insertion: crest of greater tubercle – Action: adducts the arm and rotates
it medially; the clavicular fibers also flex the arm; with the arm above the head, raise the body as in climbing
• Sternohyoid 胸骨舌骨肌 • Thyrohyoid 甲状舌骨肌 • Sternothyroid 胸骨甲状肌 • Omohyoid 肩胛舌骨肌
--下降舌骨和喉.
Muscles of the neck
颈深肌群Deep group
位于脊柱颈部两侧和前方。 • Lateral
– Scalenus anterior 前斜角肌 – Scalenus medius 中斜角肌 – Scalenus posterior 后斜角肌
– Insertion: lateral third of clavicle, acromion, and spine of scapular
– Acton: draw the scapula toward vertebral column. supper fibers elevate scapula, lower fibers depress scapula; if scapula is fixed, one side acting along, draws head toward the same side, and turn face to opposite side; both sides together, draw head directly backward
