23i 



THE MUSCLES. 



the medium of the subbrachial aponeurosis of the panniculus and a con- 

 siderable quantity of cellular tissue. Its upper border adheres m an intimate 

 manner to the last-named muscle, and is bordered by the spur (external 

 thoracic) vein. The large vascular trunks which leave the chest to reach 



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2 M .2 « p. .' 3 



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the anterior limb, pass above its anterior extremity, by crossing its 

 direction. 



Action. — It pulls the whole limb backwards, in pressing on the angle of 

 the shoulder. 



B. SxERNO-PEESOAPULAEis. — (The pectoralis parvus of Percivall and 

 Bourgelat.) — Fwm — Situation — Direction. — A long prismatic muscle, con- 



