The lower or ______ end has two _______. The medial _______ has an hour-glass shape, the lateral one is ball-shaped and is called __________. Each of them carries a little raised attachment areas for muscles called _______ and __________. On the anterior aspect of the proximal part there are two fossae, a shallow _____ fossa and a deeper _____ fossa. On the posterior aspect is the _______ fossa for the _______ process of the ______.