Thyrohyoid Muscle Origin and Insertion 甲状舌骨肌的起止点 The infrahyoid muscles are a group of four muscles including the sternohyoid, sternothyroid, omohyoid, and the thyrohyoid, which is the focus of this particular tutorial. They lie under the hyoid bone attaching to the sternum, larynx and scapula.舌骨下肌群是由胸骨舌骨肌，胸骨甲状肌，肩胛舌骨肌和甲状舌骨肌4块肌肉组成的一组肌肉群，这节课主要讲解甲状舌骨肌，它们位于舌骨下方，附着在胸骨、喉和肩胛骨上。 The thyrohyoid muscle constitutes the continuation of the sternothyroid originating at the oblique line of thyroid cartilage and inserting on the body of hyoid and greater cornu.甲状舌骨肌是胸骨甲状腺肌的延续部分，起自甲状软骨斜线，止于舌骨体和舌骨大角。 All four infrahyoid muscles are supplied by the deep ansa cervicalis which arises from the cervical plexus.所有四块舌骨下肌均由颈丛发出的颈深神经袢支配。 The thyrohyoid receives additional supply through branches of the superior root of ansa cervicalis accompanied by the hypoglossal nerve.甲状舌骨肌也受颈神经袢上根分支伴舌下神经支配。 The infrahyoid muscles are responsible for the positioning of the hyoid bone along with the suprahyoid muscles. They play an active role in swallowing and the movement of the larynx.舌骨下肌和舌骨上肌负责定位舌骨。它们在吞咽和喉部运动中发挥着积极作用。 More specifically, three of the infrahyoid muscles including the thyrohyoid depress the hyoid.更具体地说，包括甲状舌骨肌在内的三块舌骨下肌拉舌骨向下。 The thyrohyoid elevates the larynx when the hyoid bone is fixed and the sternothyroid depresses it. This muscle, in particular, is responsible for bringing the hyoid and thyroid cartilages close together.当舌骨固定时，甲状舌骨肌抬高喉部，胸骨甲状肌使咽喉下降。特别需要注意的是，甲状舌骨肌负责使舌骨和甲状软骨紧挨在一起。 相关单词学习
Infrahyoid
①发音和释义 in·fra·hy·oid/ɪnfrə'haɪɔɪd/adj. 舌骨下的Below the hyoid bone. 单词 infrahyoid由下列成分构成 infra-（前缀）低于(或超出)某限度的+hyoid 舌骨的（图源：太帅图库）
Omohyoid
o·mo·hy·oid/ˌəumə'haiɔid/n. 肩胛舌骨肌Infrahyoid muscle; formed of two bellies attached to intermediate tendon. 单词 omohyoid由下列成分构成 omo-（前缀）肩+hyoid 舌骨
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