Teres minor muscle
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{{Infobox Muscle |
Name = {{PAGENAME}} |
Latin = musculus teres minor |
GraySubject = 123 |
GrayPage = 441 |
Image = Gray810.png |
Caption = Suprascapular and axillary nerves of right side, seen from behind. (Teres minor is visible at center.) |
Image2 = Arm muscles back numbers.png |
Caption2 = Muscles on the dorsum of the [[scapula]], and the [[Triceps brachii muscle]]: #3 is [[Latissimus dorsi muscle]]<BR>#5 is [[Teres major muscle]]<BR>#6 is [[Teres minor muscle]]<BR>#7 is [[Supraspinatus muscle]]<BR>#8 is [[Infraspinatus muscle]]<BR>#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 images==
<gallery>
Image:Shoulderjoint.PNG|Diagram of the human shoulder joint
Image:Gray203.png|Left scapula. Dorsal surface.
Image:Gray208.png|Left humerus. Posterior view.
Image:Gray521.png|The scapular and circumflex arteries.
Image:Gray818.png|The suprascapular, axillary, and radial nerves.
</gallery>
==External links==
* {{GPnotebook|-1583742916}}
* {{MuscleLoyola|tmn}}
* {{SUNYAnatomyFigs|03|03|05}}
==See also==
*[[Accessory muscles of the scapula]]
{{Gray's}}
{{muscle-stub}}
{{Muscles of upper limb}}
[[Category:Muscles of the upper limb]]
[[ar:عضلة مدورة صغيرة]]
[[cs:Malý oblý sval]]
[[de:Musculus teres minor]]
[[fr:Muscle petit rond]]
[[id:Otot teres minor]]
[[hr:Mali obli mišić]]
[[he:השריר העגול הקטן]]
[[hu:Kis görgetegizom]]
[[la:Musculus teres minor]]
[[nl:Musculus teres minor]]
[[pl:Mięsień obły mniejszy]]
[[pt:Músculo redondo menor]]
[[sv:Teres minor]]
[[sl:Mala okrogla mišica]]