one of two thick muscles running from the sternum and clavicle to the mastoid and occipital bone; turns head obliquely to the opposite side; when acting together they flex the neck and extend the head
Finally, the sternocleidomastoid muscle pulled upward on the medial part of the fractured clavicle, leading to the rupture of the periosteum. 最后，胸锁乳突肌向上牵拉锁骨内侧部的骨折部分，导致骨膜破裂。
The deeper portion of the gland lies between the anterior border of the sternocleidomastoid and the posterior belly of the digastric muscles. 腮腺的深部介于胸锁乳突肌的前缘和后部的二腹肌后腹。
用作形容词 (adj.)
The deeper portion of the gland lies between the anterior border of the sternocleidomastoid and the posterior belly of the digastric muscles. 腮腺的深部介于胸锁乳突肌的前缘和后部的二腹肌后腹。
Finally, the sternocleidomastoid muscle pulled upward on the medial part of the fractured clavicle, leading to the rupture of the periosteum. 最后，胸锁乳突肌向上牵拉锁骨内侧部的骨折部分，导致骨膜破裂。
