The spine of the scapula divides its back surface into unequal portions. This spine leads to a head, that bears two processes - the acromion process that forms the tip of the shoulder and a coracoid process that curves forward and down below the clavicle (collarbone). The acromion, a bony prominence at the top of the shoulder blade, joins the clavicle and provides attachments for muscles of the arm Continue Scrolling To Read More Below...