humerus

  • head : top of humerus

  • lesser tubercle : under the head

  • greater tubercle : beside the head

  • intertubercle groove : running down anterior middle 

  • deltoid tuberosity : sticks out in the shaft 

  • lateral epicondyle : farthest right (a)

  • capitulum : sphere shape 

  • trochlea : bone next to capitulum

  • radial fossa : above capitulum/trochlea in the middle 

  • coronoid fossa : the depression 

  • medial epicondyle : farthest left (a)

  • olecranon fossa : the bigger depression