Action: Abducts arm Origin - Supraspinous fossa of the scapula Insertion - Greater tubercle of the humerus Innervation - Suprascapular nerve (C5,6) from the superior trunk of the brachial plexus

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1.
Action: Abducts arm
Origin - Supraspinous fossa of the scapula
Insertion - Greater tubercle of the humerus
Innervation - Suprascapular nerve (C5,6) from the superior trunk of the brachial plexus