Key facts
- 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
- Latin
- musculus teres major
- Ta98
- A04.6.02.011
via Wikipedia infobox
Wikidata facts
- Image
- Teres major muscle animation2.gif
- Connects with
- intertubercular sulcus of the humerus
Show 5 more facts
- innervated by
- Inferior subscapular nerve
- Commons category
- Teres major muscles
- arterial supply
- posterior humeral circumflex artery
- muscle origin
- inferior angle of the scapula
- muscle insertion
- intertubercular sulcus of the humerus
Sources (3)
via Wikidata · CC0
~3 min read
Encyclopedic overview
The teres major muscle is a muscle of the upper limb. It attaches to the scapula and the humerus and is one of the seven scapulohumeral muscles. It is a thick but somewhat flattened muscle.
The teres major muscle (from Latin teres, meaning "rounded") is positioned above the latissimus dorsi muscle and assists in the extension and medial rotation of the humerus. This muscle is commonly confused as a rotator cuff muscle, but it is not, because it does not attach to the capsule of the shoulder joint, unlike the teres minor muscle, for example.
Excerpted from Wikipedia’s “teres major muscle” article, available under the CC BY-SA 4.0 licence.