摘要
目的:为胸锁乳突肌亚部的临床应用提供形态学依据。方法:肌构筑法,组织学HE染色和体视学法。结果:(1)胸骨头亚部的肌重与生理横切面积分别是锁骨头两亚部之和的1.39倍与1.33倍;锁骨头深亚部的肌纤维长仅为胸骨头亚部肌纤维长的82%。(2)胸骨头亚部和锁骨头浅亚部的肌梭密度显著小于锁骨头深亚部。(3)副神经胸锁乳突肌支绕锁骨头深亚部后缘(占65%)入肌时距乳突尖(4.39±0.42)cm,而穿锁骨头深亚部(占35%)入肌时距乳突尖(3.96±0.34)cm。结论:胸骨头亚部是胸锁乳突肌肌力的主要提供者。锁骨头深亚部更多参与维持头部姿势。
To provide morphological data for clinical application of the compartments of sternocleidomastoid muscle （SCM）. Methods. Muscle architecture method, HE staining and stereology method were used. Results： （1）The muscle weight and physiologic cross sectional area of the sternal head compartment were respectively 1.39 and 1.33 times than those of both clavicular-head compartments. （2） The muscle spindle density of the sternal-head compartment and the superficial clavicular-head compartment were obviously less than those of the deep clavicular-head compartment. （3）When the SCM branch of accessory nerve was around the posterior edge of the deep clavicular-head compartment of SCM （65%）, the distance between the entrance point of the accessory nerve and the tip of mastoid process was （4.39±0. 42）cm. But when it was inserted into the deep clavicular-head compartment of SCM （35%）, the distance was （3.96±0. 34）cm. Conclusion： The force of SCM is mainly produced by the sternal-head compartment. The deep clavicular-head compartment mainly takes part in maintaining the position of head.
出处
《解剖学杂志》
CAS
CSCD
北大核心
2005年第4期465-467,共3页
Chinese Journal of Anatomy
基金
教育部科学技术研究重点项目基金(02136)
关键词
胸锁乳突肌亚部
肌构筑
肌梭
神经入肌点
muscle architecture
muscle spindle
nerve
sternocleidomastoid muscle
