WordNet

of the field of academic study in which one concentrates or specializes; "his major field was mathematics"
a commissioned military officer in the United States Army or Air Force or Marines; below lieutenant colonel and above captain
a university student who is studying a particular field as the principal subject; "she is a linguistics major"
the principal field of study of a student at a university; "her major is linguistics"
greater in number or size or amount; "a major portion (a majority) of the population"; "Ursa Major"; "a major portion of the winnings"
greater in scope or effect; "a major contribution"; "a major improvement"; "a major break with tradition"; "a major misunderstanding"
have as ones principal field of study; "She is majoring in linguistics"
of a scale or mode; "major scales"; "the key of D major"
of full legal age
of greater importance or stature or rank; "a major artist"; "a major role"; "major highways"
of greater seriousness or danger; "a major earthquake"; "a major hurricane"; "a major illness"
of the elder of two boys with the same family name; "Jones major"
either of two muscles in the shoulder region that move the shoulders and arms (同)teres muscle
British statesman who was prime minister from 1990 until 1997 (born in 1943) (同)John Major, John R. Major, John Roy Major

PrepTutorEJDIC

『大きい』(『多い』)『ほうの』,いっそう重要な / (音階が)長調の,長音階の / 《英》《昔の学校で同姓または兄弟生徒を区別するために姓の後につけて》年長の,兄の / 《しばしばM-》陸軍(空軍)少佐 / 《米》専攻科目;専攻学生 / 《the majors》《米》=major leagues / (科目を)専攻する《+『in』+『名』》

Wikipedia preview

出典(authority):フリー百科事典『ウィキペディア（Wikipedia）』「2016/04/05 12:02:32」(JST)

wiki en

The teres major muscle (Latin teres meaning 'rounded') is a muscle of the upper limb and one of seven scapulohumeral muscles. It is a thick but somewhat flattened muscle, innervated by the lower subscapular nerve (C5 and C6).

Structure

It arises from the oval area on the dorsal surface of the inferior angle of the scapula, and from the fibrous septa interposed between this muscle and the rotator cuff lateral rotator pair of the teres minor and infraspinatus.

The fibers of teres major insert into the medial lip of the intertubercular sulcus of the humerus.

Relations

The tendon, at its insertion, lies behind that of the latissimus dorsi, from which it is separated by a bursa, the two tendons being, however, united along their lower borders for a short distance.

Together with teres minor muscle, teres major muscle forms the axillary space, through which several important arteries and veins pass.

The teres major muscle is innervated by the lower subscapular nerve of the brachial plexus.

Function

The teres major is a medial rotator and adductor of the humerus and assists the latissimus dorsi in drawing the previously raised humerus downward and backward (extension, but not hyper extension). It also helps stabilize the humeral head in the glenoid cavity.

Additional images

Position of teres major muscle (shown in red). Animation.
Muscles on the dorsum of the scapula, and the Triceps brachii muscle:
1. 3 latissimus dorsi muscle
2. 5 teres major muscle
3. 6 teres minor muscle
4. 7 supraspinatus muscle
5. 8 infraspinatus muscle
6. 13 long head of triceps brachii muscle
Surface anatomy of the back. (Label for Teres major at upper right.)
Left humerus. Anterior view.
Teres major muscle
Left scapula. Posterior surface.
Teres major muscle

References

This article incorporates text in the public domain from the 20th edition of Gray's Anatomy (1918)

External links

711655502 at GPnotebook
Anatomy figure: 03:03-06 at Human Anatomy Online, SUNY Downstate Medical Center
PTCentral

UpToDate Contents

全文を閲覧するには購読必要です。 To read the full text you will need to subscribe.

1. 上肢末梢神経症候群の概要 overview of upper extremity peripheral nerve syndromes
2. 肩の運動器超音波 musculoskeletal ultrasound of the shoulder
3. 成人における単極性うつ病：初期治療の選択 unipolar major depression in adults choosing initial treatment
4. 小児の双極性障害：治療法の選択に関する概要 pediatric bipolar disorder overview of choosing treatment
5. Geriatric bipolar disorder: General principles of treatment

English Journal

CORR Insights(®): Latissimus Dorsi and Teres Major Transfer With Reverse Shoulder Arthroplasty Restores Active Motion and Reduces Pain for Posterosuperior Cuff Dysfunction.

Wieser K1.
Clinical orthopaedics and related research.Clin Orthop Relat Res.2015 Oct;473(10):3218-20. doi: 10.1007/s11999-015-4473-9. Epub 2015 Jul 29.
PMID 26220894

Latissimus Dorsi and Teres Major Transfer With Reverse Shoulder Arthroplasty Restores Active Motion and Reduces Pain for Posterosuperior Cuff Dysfunction.

Shi LL1, Cahill KE, Ek ET, Tompson JD, Higgins LD, Warner JJ.
Clinical orthopaedics and related research.Clin Orthop Relat Res.2015 Oct;473(10):3212-7. doi: 10.1007/s11999-015-4433-4. Epub 2015 Jul 3.
BACKGROUND: In patients with rotator cuff dysfunction, reverse shoulder arthroplasty can restore active forward flexion, but it does not provide a solution for the lack of active external rotation because of infraspinatus and the teres minor dysfunction. A modified L'Episcopo procedure can be perfor
PMID 26139622

Computational reverse shoulder prosthesis model: Experimental data and verification.

Martins A1, Quental C2, Folgado J3, Ambrósio J4, Monteiro J5, Sarmento M6.
Journal of biomechanics.J Biomech.2015 Sep 18;48(12):3242-51. doi: 10.1016/j.jbiomech.2015.06.031. Epub 2015 Jul 8.
The reverse shoulder prosthesis aims to restore the stability and function of pathological shoulders, but the biomechanical aspects of the geometrical changes induced by the implant are yet to be fully understood. Considering a large-scale musculoskeletal model of the upper limb, the aim of this stu
PMID 26206550

Japanese Journal

肩外転運動時の腱板および周囲筋のempty, full can での筋電位

山根慎太郎,吉岡千佳,大泉尚美,末永直樹
肩関節 37(3), 927-929, 2013
… Fine-wire EMG electrodes were inserted into supraspinatus (SSP), infraspinatus (ISP), teres minor (TM), and upper and lower part of subscapularis (SSCU and SSCL). … Surface electrode EMG were collected from lattisimus dorsi(LD), deltoid anterior(DA), middle(DM), posterior(DP), pectralis major upper(PMU), lower(PML), and trapezius(TRAP). …
NAID 130003384332

Effects of Neuromuscular Joint Facilitation on Electromechanical Reaction Times of the Teres Major

HUO MING,LI DESHENG,GE MENG,HUANG QIUCHEN,MARUYAMA HITOSHI
Journal of physical therapy science 24(1), 93-95, 2012-02-29
NAID 10030482775

投球障害肩における肩後方のタイトネスに対する最適なストレッチ法を求めて<BR>―F-Kストレッチ法の有用性―

藤井康成,泉俊彦,小倉雅,東郷泰久,栫博則
肩関節 36(2), 741-744, 2012
… First, they had a massage of the lateral and posterior scapular muscles such as infraspinatus, latissimus dorsi, teres major and minor, and triceps brachii. …
NAID 130002103774

「大円筋」

Teres major muscle
	Posterior view showing the relations between teres major muscle (in red) and the other muscles connecting the upper extremity to the vertebral column.
	Teres major muscle (in red) seen from back.
Details
Origin	Posterior aspect of the inferior angle of the scapula
Insertion	Medial lip of the intertubercular sulcus of the humerus
Artery	Subscapular and circumflex scapular arteries
Nerve	Lower subscapular nerve (segmental levels C5 and C6)
Actions	adduct the humerus, Internal rotation (medial rotation) of the humerus, extend the humerus from flexed position, Protracts scapula, Depress shoulder
Identifiers
Latin	Musculus teres major
Dorlands; /Elsevier	m_22/12551115
TA	A04.6.02.011
FMA	32549
	Anatomical terms of muscle [edit on Wikidata]