Skeletal system

3. a long, slightly curved bone that connects your arm to your body.
4. your upper arm bone
5. a structure in the human or animal body at which two parts of the skeleton are fitted together.
7. painful inflammation and stiffness of the joints.
11. calcium and phosphorus
13. a soft fatty substance in the cavities of bones, in which blood cells are produced (often taken as typifying strength and vitality
14. your upper arm bone
15. one of the two forearm long bones that, in conjunction with the radius, make up the

1. A tough, flexible tissue that lines joints and gives structure to the nose, ears, larynx, and other parts of the body.
2. your calf bone
6. a medical condition in which the bones become brittle and fragile from loss of tissue, typically as a result of hormonal changes, or deficiency of calcium or vitamin D.
8. The larger of two bones between the knee and ankle.
9. your calf bone
10. The bones between the lower abdomen and upper thighs that connect the spine to the legs
12. a framework of bone or cartilage enclosing the brain of a vertebrate; the skeleton of a person's or animal's head.