"arterial supply: suprascapular and circumflex scapular arteries1"
Expected headings
"Origin"
"Insertion"
"Action"
"It arises medially from the infraspinous fossa of the scapula, specifically from fleshy fibres from its medial two-thirds, and by tendinous fibres from the ridges on its surface; it also arises from the infraspinatous fascia which covers it, and separates it from the teres major and minor muscles."