1. Skeletal System

2. Bones:
the hard connective tissue forming the substance of the skeleton of most vertebrates, composed of a collagen-richorganic matrix

3. Ligaments:
a band of tissue, usually white and fibrous, serving to connect bones, hold organs in place, etc.

4. Cartilage:
a firm, elastic, flexible type of connective tissue of a translucent whitish or yellowish color; gristle.

5. Tendon:
a cord or band of dense, tough, inelastic, white, fibrous tissue, serving to connect a muscle with a bone or part; sinew.