Teres minor muscle

Teres minor muscle

Infobox Muscle
Name = PAGENAME
Latin = musculus teres minor
GraySubject = 123
GrayPage = 441


Caption = Suprascapular and axillary nerves of right side, seen from behind. (Teres minor is visible at center.)


Caption2 = Muscles on the dorsum of the scapula, and the Triceps brachii muscle: #3 is Latissimus dorsi muscle
#5 is Teres major muscle
#6 is Teres minor muscle
#7 is Supraspinatus muscle
#8 is Infraspinatus muscle
#13 is long head of Triceps brachii muscle
Origin = lateral border of the scapula
Insertion = inferior facet of greater tubercle of the humerus
Blood = lateral circumflex humeral artery and the circumflex scapular artery
Nerve = axillary nerve
Action = laterally rotates and adducts the arm
MeshName =
MeshNumber =
DorlandsPre = m_22
DorlandsSuf = 12551124
The Teres minor is a narrow, elongated muscle of the rotator cuff.

Origin and insertion

It arises from the dorsal surface of the axillary border of the scapula for the upper two-thirds of its extent, and from two aponeurotic laminæ, one of which separates it from the Infraspinatus, the other from the Teres major.

Its fibers run obliquely upward and lateralward; the upper ones end in a tendon which is inserted into the lowest of the three impressions on the greater tubercle of the humerus; the lowest fibers are inserted directly into the humerus immediately below this impression.

Relations

The tendon of this muscle passes across, and is united with, the posterior part of the capsule of the shoulder-joint.

Action

The Infraspinatus and Teres minor rotate the head of the humerus outward; they also assist in carrying the arm backward.

Variations

Sometimes a group of muscle fibres from teres minor may be fused with Infraspinatus.


=Additional

External links

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ee also

*Accessory muscles of the scapula


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Look at other dictionaries:

  • Teres minor muscle — A muscle that assists the lifting of the arm during outward turning (external rotation) of the arm. The tendon of the teres minor muscle is one of four tendons that stabilize the shoulder joint and constitute the rotator cuff. Each of these four… …   Medical dictionary

  • teres minor muscle — noun teres muscle that adducts the arm and rotates it laterally • Syn: ↑teres minor, ↑musculus teres minor • Hypernyms: ↑teres, ↑teres muscle …   Useful english dictionary

  • Teres major muscle — Muscle infobox Name = Teres major muscle Latin = musculus teres major GraySubject = 123 GrayPage = 442 Caption = Muscles on the dorsum of the scapula, and the Triceps brachii muscle: #3 is Latissimus dorsi muscle #5 is Teres major muscle #6 is… …   Wikipedia

  • Muscle, teres minor — A muscle that assists the lifting of the arm during outward turning (external rotation) of the arm. The tendon of the teres minor muscle is one of four tendons that stabilize the shoulder joint and constitute the rotator cuff. Each of these four… …   Medical dictionary

  • teres minor — noun teres muscle that adducts the arm and rotates it laterally • Syn: ↑teres minor muscle, ↑musculus teres minor • Hypernyms: ↑teres, ↑teres muscle …   Useful english dictionary

  • teres minor — n a long cylindrical muscle that arises from the upper two thirds of the axillary border of the scapula, passes behind the long head of the triceps to insert chiefly on the greater tubercle of the humerus, contributes to the formation of the… …   Medical dictionary

  • musculus teres minor — noun teres muscle that adducts the arm and rotates it laterally • Syn: ↑teres minor, ↑teres minor muscle • Hypernyms: ↑teres, ↑teres muscle …   Useful english dictionary

  • musculus teres minor — [TA] teres minor muscle: origin, lateral margin of scapula; insertion, greater tubercle of humerus; innervation, axillary; action, rotates arm laterally …   Medical dictionary

  • Teres (disambiguation) — Teres may refer to: *Teres, the first king of the Odrysian state of Thrace. *pronator teres muscle, a muscle located mainly in the human forearm *teres major muscle, a muscle of the upper limb; one of six scapulohumeral muscles *teres minor… …   Wikipedia

  • teres — noun either of two muscles in the shoulder region that move the shoulders and arms • Syn: ↑teres muscle • Hypernyms: ↑skeletal muscle, ↑striated muscle • Hyponyms: ↑teres major, ↑teres major muscle, ↑ …   Useful english dictionary

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