scalenus medius

中斜角筋

WordNet

1. any of four pairs of muscles extending from the cervical vertebrae to the second rib; involved in moving the neck and in breathing (同)scalene_muscle, musculus scalenus

Wikipedia preview

出典(authority):フリー百科事典『ウィキペディア（Wikipedia）』「2013/11/25 23:54:42」(JST)

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Scalenus medius
The anterior vertebral muscles. (Scalenus medius visible at bottom center-right in red.)
Muscles of the neck. Scalenus medius shown in red.
Latin	Musculus scalenus medius
Gray's	subject #114 396
Origin	Posterior tubercles of the transverse processes of the lower six cervical vertebræ (C2, C3, C4, C5, C6 and C7)
Insertion	Upper surface of the first rib
Artery	Ascending cervical artery (branch of Inferior thyroid artery)
Nerve	Ventral rami of the third to eighth cervical spinal nerves
Actions	Elevate 1st rib, rotate the neck to the opposite side

The Scalenus medius, also known as the middle scalene, is the largest and longest of the three scalene muscles in the human neck.

Anatomy

The middle scalene arises from the posterior tubercles of the transverse processes of the lower six cervical vertebræ. It descendes along the side of the vertebral column to insert by a broad attachment into the upper surface of the first rib, between the tubercle and the subclavian groove. The brachial plexus and the subclavian artery pass anterior to it. Because it elevates the upper ribs, the middle scalene muscle is also one of the accessory muscles of respiration.

Clinical Significance

It is involved in thoracic outlet syndrome, which is compression of the subclavian vessels and nerves of the brachial plexus in the region of the thoracic inlet.

Additional images

• Position of scalenus medius (shown in red). Animation.

• Scalenus medius (shown in red). Close up.

• Scalenus medius (shown in red) without skull.

• Still image.

• Right first rib.

• Horizontal section of the neck at about the level of the sixth cervical vertebra. Showing the arrangement of the fascia coli (scalenus medius visible at center left in green).

• Scalenus medius muscle

• Scalenus medius

• Scalenus medius

• Scalenus medius

• Brachial plexus.Deep dissection.

See also

• Scalene muscles
• Scalenus anticus
• Scalenus posterior
• Accessory muscles of respiration
• Thoracic outlet syndrome
• Brachial plexus
• Subclavian artery

References

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

External links

• LUC sm - scalenus medius

UpToDate Contents

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English Journal

• Fiber types of the anterior and lateral cervical muscles in elderly males.

• Cornwall J1, Kennedy E.
• European spine journal : official publication of the European Spine Society, the European Spinal Deformity Society, and the European Section of the Cervical Spine Research Society.Eur Spine J.2015 Feb 14. [Epub ahead of print]
• PURPOSE: The anterior and lateral cervical muscles (ALCM) are generally considered to be postural, yet few studies have investigated ALCM fiber types to help clarify the function of these muscles. This study aimed to systematically investigate ALCM fiber types in cadavers.METHODS: Anterior and later
• PMID 25681116

• Role of dorsal scapular nerve entrapment in unilateral interscapular pain.

• Sultan HE1, Younis El-Tantawi GA.
• Archives of physical medicine and rehabilitation.Arch Phys Med Rehabil.2013 Jun;94(6):1118-25. doi: 10.1016/j.apmr.2012.11.040. Epub 2012 Dec 6.
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• Qian HP1, Wan JH, Li XJ, Liu SY.
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• OBJECTIVE: To study the indication and character of the lateral-cervical approach for treating dumble-shape neurogenic tumors in cervical spine.METHODS: Retrospectively review the clinical data of 14 dumble-shape neurogenic tumors in cervical spine, from October 2005 to October 2011. Among them 8 we
• PMID 23336486

Japanese Journal

• 長胸神経・前鋸筋の解剖と臨床

• 肩関節 = Shoulder joint 34(3), 861-865, 2010-08-04
• NAID 10027676155

• 中斜角筋切腱術が奏功した斜角筋症候群の1例

• 末梢神経 = Peripheral nerve 21(1), 106-111, 2010-06-01
• NAID 10027578714

• 中斜角筋切腱術が奏効した斜角筋症候群の1例

• 末梢神経 = Peripheral nerve 20(2), 151-152, 2009-12-01
• NAID 10027267889

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★リンクテーブル★

リンク元	「中斜角筋」
関連記事	「scalenus」

「中斜角筋」

　　[★]

英

scalenus medius muscle (KA), middle scalenus muscle

ラ

musculus scalenus medius, scalenus medius (K)

関

前斜角筋、後斜角筋。斜角筋隙

起始

• C2-C6(横突起)

停止

• 第1肋骨(鎖骨下動脈溝の後方)

神経

• 頚神経叢

機能

• 第1肋骨を挙上

「scalenus」

　　[★]

斜角筋

関

scalenus muscle