| A | B |
|---|
| skeletal system | body's network of bones which form a rigid frame to support the body, protect internal organs , generate red blood cells, and store calcium and phosphorus |
| periosteum | tight fitting membrane covering bone |
| marrow | red of yellow fatty tissue in some bones that produces red and white blood cells |
| cartilage | thick, tough, smooth, flexible tissue that is harder than flesh but softer then bone, covers the ends of bones to allow movement and cushion shock |
| fracture | a break of a bone |
| joint | amy place where 2 bones meet |
| ligament | tough band of tissue that holds bones together. |
| immovable joint | a juncture of 2 or more bones made so that no movement occurs |
| movable joint | place where 2 ormore bones meet or are attached and allow movement |
| muscle | tissue that can relax and contract to allow movement |
| voluntary muscle | muscle you can control, such as arm or leg |
| involuntary muscle | muscle that can't be consciously controlled, such as heart and digestive tract |
| skeletal muscles | voluntary muscles tissue attached to bones, the muscles that makes the bones mvoe |
| tendons | thick band of tissue that attaches a muscle to a bone |
| smooth muscle | involuntary muscle tissue that forms the walls of the stomach, intertines, uterus, and blood vessels |
| cardiac muscle | involuntary muscle tissue found only in the heart |
| anabolic steroids | drugs similar to testosterone; increase muscle mass; thought to improve athletic performance |
| epidermis | surface of outer layr of the 2 layers of skin |
| melanin | a chemical produced by the epidermis that gives skin its color |
| dermis | inner layer of skin; it contains blood vessels, nerves, & sweat glands. |
