Action: Rotates arm medially Origin - Subscapular fossa of the scapula Insertion - Lesser tubercle of the humerus Innervation - Upper and lower subscapular nerves (C5,6)

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1.
Action: Rotates arm medially
Origin - Subscapular fossa of the scapula
Insertion - Lesser tubercle of the humerus
Innervation - Upper and lower subscapular nerves (C5,6)