subclavius muscle

鎖骨下筋

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）』「2013/09/06 14:55:49」(JST)

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[Wiki en表示]

Subclavius muscle
Subclavius muscle (shown in red).
Deep muscles of the chest and front of the arm, with the boundaries of the axilla. (Subclavius visible at upper left, above first rib.)
Latin	musculus subclavius
Gray's	subject #122 438
Origin	first rib and cartilage
Insertion	subclavian groove of clavicle (inferior surface of middle third of clavicle)
Artery	thoracoacromial trunk, clavicular branch
Nerve	nerve to subclavius
Actions	depression of clavicle

The subclavius is a small triangular muscle, placed between the clavicle and the first rib. Along with the pectoralis major and pectoralis minor muscles, the subclavius muscle makes up the anterior wall of the axilla.

Origin and insertion

It arises by a short, thick tendon from the first rib and its cartilage at their junction, in front of the costoclavicular ligament.

The fleshy fibers proceed obliquely superolaterally, to be inserted into the groove on the under surface of the clavicle between the trapezoid ligament and conoid ligaments, which collectively form the coracoclavicular ligament.

Action

The subclavius depresses the shoulder, carrying it downward and forward. It draws the clavicle inferiorly as well as anteriorly.

The subclavius protects the underlying brachial plexus and subclavian vessels from a broken clavicle - the most frequently broken long bone.

Variations

Insertion into coracoid process instead of clavicle or into both clavicle and coracoid process. Sternoscapular fasciculus to the upper border of scapula. Sternoclavicularis from manubrium to clavicle between pectoralis major and coracoclavicular fascia.

Additional images

• Subclavius muscle (shown in red). Humerus and scapula are shown in semi-transparent. Animation.

• Subclavius muscle (shown in red).

• Anterior surface of sternum and costal cartilages.

• Left clavicle. Inferior surface.

• The axillary artery and its branches.

• The right brachial plexus (infraclavicular portion) in the axillary fossa; viewed from below and in front.

• Subclavius muscle - left view

• Subclavius muscle- right view

References

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

External links

• LUC subc
• [1] at GPnotebook
• PTCentral
• Pivotal Places: help for problem shoulders

UpToDate Contents

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• 1. 筋力低下の評価における筋力検査 muscle examination in the evaluation of weakness
• 2. 慢性閉塞性肺疾患（COPD）における呼吸筋のトレーニングおよび安静 respiratory muscle training and resting in copd
• 3. 筋力低下患者へのアプローチ approach to the patient with muscle weakness
• 4. 筋ホスホリラーゼ欠損症（糖原病V型、マッカードル病） muscle phosphorylase deficiency glycogen storage disease v mcardle disease
• 5. 筋肉におけるエネルギー代謝 energy metabolism in muscle

English Journal

• Neurogenic thoracic outlet syndrome due to subclavius posticus muscle with dynamic brachial plexus compression: a case report.

• Muellner J1, Kaelin-Lang A2, Pfeiffer O3, El-Koussy MM4.
• BMC research notes.BMC Res Notes.2015 Aug 14;8:351. doi: 10.1186/s13104-015-1317-3.
• BACKGROUND: Neurogenic thoracic outlet syndrome is an underestimated cause of brachial weakness and pain. The subclavius posticus muscle (SPM) is an aberrant muscle originating from the medial aspect of the first rib reaching to superior border of the scapula, which may cause, depending on its activ
• PMID 26268814

• Subclavius posticus: an anomalous muscle in association with suprascapular nerve compression in an athlete.

• Cogar AC1, Johnsen PH1, Potter HG1, Wolfe SW1.
• Hand (New York, N.Y.).Hand (N Y).2015 Mar;10(1):76-9. doi: 10.1007/s11552-014-9652-8.
• Subclavius posticus is a rare anomalous muscle that traverses from the costal cartilage of the first rib posterolaterally to the superior border of the scapula. We present an athlete who presented with incapacitating suprascapular nerve compression associated with a subclavius posticus diagnosed by
• PMID 25762884

• The subclavius posticus muscle: an unusual cause of thoracic outlet syndrome.

• Smayra T1, Nabhane L, Tabet G, Menassa-Moussa L, Hachem K, Haddad-Zebouni S.
• Surgical and radiologic anatomy : SRA.Surg Radiol Anat.2014 Sep;36(7):725-8. doi: 10.1007/s00276-013-1227-9. Epub 2013 Oct 29.
• We present the case of a 30-year-old female, complaining of thoracic outlet compression symptoms caused by a supernumerary muscle, the subclavius posticus, accompanied by a caudally inserted middle scalenus muscle on the second rib. This rare anatomic variant was clearly shown on CT angiography and
• PMID 24166072

Japanese Journal

• Morphogenesis of the Subclavian Vein Relative to the Course of theNerve to the Subclavius Muscle and the Phrenic Nerve

• Hiroo Matsumura,Katsuji Kumaki
• Acta medica et biologica 44(1), 13-18, 1996-03
• NAID 110004461883

• 鎖骨下筋に関する研究,特に家畜の相同筋に関して : II. 家兎 Orytolagus cuniculus var. domesticus の鎖骨下筋と胸筋について

• 猪口 繁三郎,上嶋 俊彦
• 鳥取大学農学部研究報告 40, 147-153, 1987-11
• NAID 110000289708

Related Links

• Subclavius Muscle Origin, Anatomy & Function | Body Maps

The subclavius muscle is a relatively minor muscle located deep within the chest. The human body has two of these muscles, each inserting into the inferior of the clavicle bone (collarbone). The origination of each muscle is from the ...

• Subclavius Muscle - YouTube

Learn about the Subclavius Muscle. ... This feature is not available right now. Please try again later.

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★リンクテーブル★

リンク元	「鎖骨下筋」
関連記事	「muscle」

「鎖骨下筋」

　　[★]

英

subclavius muscle (KH)

subclavius (K, KL)

関

上肢帯の筋

• 図：N.183,226

起始

• 第1肋骨の骨・軟骨境界部 (KL.81)

停止

• 鎖骨の下面 (KL.81)

神経

• 鎖骨下筋神経(C5) (KL.81)

機能

• 鎖骨を内下方に引きつける。鎖骨の過度の挙上や前方への移動を防ぐ (KL.81)

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英

subclavius muscle

関

胸部筋群

「muscle」

　　[★]

• n.

• 筋肉