supracoracoideus muscle of wing
supracoracoideus muscle of wing
"A muscle in the bird's thorax region that originates from carina of the sternum, furcula, and sternal ribs and inserts onto proximal dorsal surface of the humerus. It acts as a primary elevator of the wing in upstroke. [Manual of Ornithology: Avian Structure and Function, by Proctor and Lynch, 1998]."