1. Chapter 15.2 Skeletal System skeletal system- Bones,cartilage,and the connective tissue that hold bones together cartilage- flexible, rubbery tissue that cushions area where bones meet joint- A place where two or more bones meet

2. ligaments- connective tissue that connects bones in a joint periosteum- the outermost portion of the bone vertebrae- are the little ring shaped bones that make up the spine

3. Bone Marrow Bone marrow fills the hollow of most bones The main function of bone marrow is producing blood cells. Red marrow produces red and white blood cells Yellow marrow stores fat.

4. Rigid means stiff and not flexible Osteoporosis- a disease where bones become less dense, weak, and break more easily. Sprain- when a ligament is stretched too far or is torn

5. 4 Functions of the Skeletal System 1.To protect other organs 2.To store minerals 3.To allow you to move 4.To make blood cells