| A | B |
| epithelial tissue | covers organs, forms inner lining of body cavities, lines hollow organs |
| ligament | type of dense connective tissue; binds bone to bone |
| tendon | type of dense connective tissue; binds muscle to bone |
| blood | within blood vessels |
| skeletal muscle | voluntary, striated, multinucleate muscle tissue |
| cardiac muscle | involuntary, striated, branched muscle tissue |
| smooth muscle | involuntary, spindle-shaped, branched muscle tissue |
| osteoblasts | these cells help bones to grow |
| organ | two or more tissues that work together to perform a function |
| resistance exercise | an effective activity for building the strength of skeletal muscle |
| strain | an injury in which a muscle or tendon is stretched too far or torn |
| skeletal system | frame made up of bones, cartilage, and the tissues that hold bones together |
| digestive system | group of organs that break down food into nutrients that the body can absorb |
| sweat glands | structure in the skin that helps to cool the body and remove wastes |
| ball-and-socket joint | structure that allows you to move your arm in all directions |
| tissue | a group of similar cells working together |
| dermis | the thicker layer of skin that lies beneath the outer layer of skin |
| epithelial tissue | the tissue that makes up the surface of your skin |
| melanin | The body produces a chemical which determines a person’s hair and skin color |
| homeostasis | the maintenance of a stable internal state in a changing environment |
| cartilage | flexible connective tissue |
| joint | places where two or more bones meet |
| voluntary muscle | muscle action that is under your control |
| involuntary muscle | muscle action that is not under your control |
| flexor | a muscle that bends part of your body |
| extensor | a muscle that strengthens part of the body and straightens that body part |