Teres minor muscle
From Wikipedia, the free encyclopedia
| Teres minor muscle | ||
|---|---|---|
| Suprascapular and axillary nerves of right side, seen from behind. (Teres minor is visible at center.) | ||
| Muscles on the dorsum of the scapula, and the Triceps brachii. (Teres minor is visible at center.) | ||
| Latin | musculus teres minor | |
| Gray's | subject #123 441 | |
| Origin: | lateral border of the scapula | |
| Insertion: | 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 | |
| Dorlands/Elsevier | m_22/12551124 | |
The Teres minor is a narrow, elongated muscle of the rotator cuff.
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.
The tendon of this muscle passes across, and is united with, the posterior part of the capsule of the shoulder-joint.
[edit] Variations
It is sometimes inseparable from the Infraspinatus.
Sometimes a group of muscle fibres from teres minor may be fused with infraspinatus.
[edit] External links
[edit] See also
This article was originally based on an entry from a public domain edition of Gray's Anatomy. As such, some of the information contained herein may be outdated. Please edit the article if this is the case, and feel free to remove this notice when it is no longer relevant.
cs:Malý oblý svalde:Musculus teres minor fr:Muscle petit rond id:Otot teres minor nl:Musculus teres minor sv:Teres minor
