Topic: Skeletal System . Fill in the blanks !?

1 cartilage, synovial fluid, ligaments 2synovial fluid 3 ligaments 4 cartilage 5 bone slightly scraping over bone joint. 6 humerus ,scapula, clavicle. 7 humeral head slips from glenoid fossa 8because bone (calcium) is denser than surrounding tissues, bone absorbs the xrays