omohyoid muscle

肩甲舌骨筋

WordNet

1. make ones way by force; "He muscled his way into the office"
2. animal tissue consisting predominantly of contractile cells (同)muscular_tissue
3. one of the contractile organs of the body (同)musculus
4. authority or power or force (especially when used in a coercive way); "the senators used their muscle to get the party leader to resign"

PrepTutorEJDIC

1. 〈U〉(動物体の組織としての)『筋肉』,筋(きん);〈C〉(体の各部を動かす)筋肉 / 〈U〉力,(特に)筋力,腕力 / 《俗に》(…に)強引に割り込む《+『in on』(『into, through』)+『名』》
2. 筋肉の,筋力のある / 力ずくの

Wikipedia preview

出典(authority):フリー百科事典『ウィキペディア（Wikipedia）』「2013/02/17 02:01:17」(JST)

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Omohyoid muscle
Side of neck, showing chief surface markings. (Omohyoid visible at center.)
Muscles of the neck. Anterior view. Omohyoid is labeled on both sides.
Latin	musculus omohyoideus
Gray's	subject #112 392
Origin	Upper border of the scapula
Insertion	Hyoid bone
Artery
Nerve	Ansa cervicalis (C1-C3)
Actions	Depresses the larynx and hyoid bone. Also carries hyoid bone backward and to the side.

The omohyoid muscle is a muscle that depresses the hyoid. It is located at the front of the neck and consists of two bellies separated by an intermediate tendon. It belongs to the group of infrahyoid muscles. Its name derives from the Greek "omos" meaning shoulder, giving one of its attachments, and "hyoid", giving the other attachment - the hyoid bone.

Structure

It arises from the upper border of the scapula, and occasionally from the superior transverse scapular ligament which crosses the scapular notch, its extent of attachment to the scapula varying from a few millimetres to 2.5 cm.

From this origin, the inferior belly forms a flat, narrow fasciculus, which inclines forward and slightly upward across the lower part of the neck, being bound down to the clavicle by a fibrous expansion; it then passes behind the sternocleidomastoid, becomes tendinous and changes its direction, forming an obtuse angle.

It ends in the superior belly, which passes almost vertically upward, close to the lateral border of the sternohyoid, to be inserted into the lower border of the body of the hyoid bone, lateral to the insertion of the sternohyoid.

The central tendon of this muscle varies much in length and form, and is held in position by a process of the deep cervical fascia, which sheaths it, and is prolonged down to be attached to the clavicle and first rib; it is by this means that the angular form of the muscle is maintained.

Triangles

The inferior belly of the omohyoid divides the posterior triangle of the neck into an upper or occipital triangle and a lower or subclavian triangle.

Its superior belly divides the anterior triangle into an upper or carotid triangle and a lower or muscular triangle.

The Omohyoid muscle is proximally attached to the scapula and distally attached to the hyoid bone.

Variations

Doubling; absence; origin from clavicle; absence or doubling of either belly.

Innervation

The omohyoid is innervated by a branch of the cervical plexus, the ansa cervicalis, and mostly acts to stabilise the hyoid bone. Although the inferior belly of the omohyoid is innervated by branches of all three cervical rami (C1-C3) that make up the ansa cervicalis, the superior belly is innervated by the superior root of ansa cervicalis which contains only fibers from the first cervical spinal nerves (C1).

Additional images

• Omohyoid muscle

• Hyoid bone. Anterior surface. Enlarged.

• Left scapula. Dorsal surface.

• Section of the neck at about the level of the sixth cervical vertebra. Showing the arrangement of the fascia coli.

• Muscles of the neck. Lateral view.

• Superficial dissection of the right side of the neck, showing the carotid and subclavian arteries.

• The veins of the neck, viewed from in front.

• Hypoglossal nerve, cervical plexus, and their branches.

• The right brachial plexus with its short branches, viewed from in front.

• Musculi colli omohyoideus

• Omohyoid muscle - anterior belly

• Omohyoid muscle - posterior belly

• Omohyoid muscle

• Omohyoid muscle, after sectioning sternocleidomastoid muscle

• Omohyoid muscle

• Omohyoid muscle - superior belly. Right view

• Omohyoid muscle

• Omohyoid muscle

The omohyoid muscle is innervated by the ansa cervicalis from the cervical plexus (C1-3)

External links

• -1335164848 at GPnotebook
• SUNY Labs 24:06-0100
• SUNY Figs 24:01-09
• LUC omo
• lesson6 at The Anatomy Lesson by Wesley Norman (Georgetown University)

This article incorporates text from a public domain edition of Gray's Anatomy.

UpToDate Contents

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English Journal

• Omohyoid Muscle Syndrome in a Mixed Martial Arts Athlete: A Case Report.

• Lee AD1, Yu A2, Young SB3, Battaglia PJ4, Ho CJ5.
• Sports health.Sports Health.2015 Sep;7(5):458-62. doi: 10.1177/1941738114532225. Epub 2014 Apr 23.
• Omohyoid muscle syndrome is a rare cause of an X-shaped bulging lateral neck mass that occurs on swallowing. This is a diagnostic case report of a 22-year-old mixed martial arts athlete who acquired this condition. © 2014 The Author(s).
• PMID 26502424

• Biometric measurements involving the terminal portion of the thoracic duct on left cervical level IV: an anatomic study.

• Louzada AC1, Lim SJ, Pallazzo JF, Silva VP, de Oliveira RV, Yoshio AM, de Araújo-Neto VJ, Leite AK, Silveira A, Simões C, Brandão LG, de Matos LL, Cernea CR.
• Anatomical science international.Anat Sci Int.2015 Aug 14. [Epub ahead of print]
• To determine the point of entrance of the thoracic duct in the venous system, as well as to evaluate some biometric measurements concerning its terminal portion, we conducted an anatomic study on 25 non-preserved cadavers. The termination of the thoracic duct occurred on the confluence between the l
• PMID 26272628

• Endoscopic Surgery for Omohyoid Muscle Syndrome.

• Zhu B1, Li K1, Li D1, Amin B1, Zhang D1, Liu C1, Yin G1, Gong K1, Zhang N1.
• Journal of laparoendoscopic & advanced surgical techniques. Part A.J Laparoendosc Adv Surg Tech A.2015 Aug;25(8):672-4. doi: 10.1089/lap.2015.0194. Epub 2015 Jun 19.
• BACKGROUND: Omohyoid muscle syndrome (OMS) (not omohyoid syndrome) is a rare clinical condition that has a characteristic feature of a protruding lateral neck mass during swallowing. The use of endoscopic surgery on the neck is now pretty well established for thyroid and parathyroid glands. Patients
• PMID 26091243

Japanese Journal

• 分枝した内頸静脈の間を肩甲舌骨筋が走行していた1例

• 日本口腔外科学会雑誌 60(5), 282-285, 2014
• NAID 130005074260

• 27年間の対症療法後に摘出された側頸囊胞の1例

• 日本口腔診断学会雑誌 27(3), 267-271, 2014
• NAID 130004715630

• 肩甲舌骨筋症候群例

• 耳鼻咽喉科臨床 104(2), 151-155, 2011-02-01
• NAID 10027794033

Related Links

• Omohyoid Muscle - Spontaneous Muscle Release ...

Let’s examine the omohyoid muscle. Omohyoid, or omohyoideus, is a muscle with two bellies. The inferior belly originates from the superior border of the scapula and runs from posterior to anterior across the superior shoulder toward ...

• Omohyoid Muscle Function, Origin & Anatomy | Body Maps

The omohyoid muscle is a flat muscle belonging to the infrahyoid muscle group. It is critical to neck surgeries, particularly in the case of lymph node metastasis, which is the spread of cancer through the lymph nodes. The omohyoid ...

Related Pictures

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★リンクテーブル★

リンク元	「肩甲舌骨筋」
関連記事	「muscle」

「肩甲舌骨筋」

　　[★]

英

omohyoid (K), omohyoid muscle

ラ

musculus omohyoideus

関

舌骨下筋、舌骨上筋群、頸部筋群

起始

• 肩甲骨(肩甲骨上縁)

停止

• 舌骨(舌骨体)

神経

• 上位頚神経

機能

• 舌骨を押し上げる

「muscle」

　　[★]

• n.

• 筋肉