| A | B |
|---|
| homeostasis | the maintenance of a stable internal environment |
| tissue | a group of similar cells that work together to perform a specific job in the body |
| epithelial tissue | tissue that covers and protects underlying tissue |
| nervous tissue | tissue that sends electrical signals throughout the body |
| connective tissue | tissue that functions to support, protect, insulate and nourish the body |
| organ | a combination of two or more tissues that work together to perform a specific function in the body |
| skeletal system | collection of organs whose primary function is to support and protect the body |
| compact bone | type of bone tissue that does not have open spaces; the tissue that gives a bone its strength |
| spongy bone | type of bone that has many open spaces and contains marrow |
| cartilage | a flexible, white tissue that gives support and protection but is not rigid like bone |
| joint | the place where two or more bones connect |
| ligament | a strong band of tissue that connects bones to bones |
| muscular system | a collection of organs whose primary function is movement |
| smooth muscle | type of muscle found in the blood vessels and digestive tract |
| cardiac muscle | type of muscle found in the heart |
| skeletal muscle | type of muscle that moves the bones and helps protect the inner organs |
| tendon | a tough connective tissue that connects skeletal muscles to bones |
| integumentary system | a collection of organs whose primary function is to help the body maintain a stable and healthy internal environment |
| sweat glands | small organs in the dermis layer of the skin that releases sweat |
| melanin | a darkening chemical in the skin that determines skin color |
| epidermis | the outermost layer of the skin |
| dermis | the layer of skin below the epidermis |
| hair follicle | a small organ in the dermis layer of the skin that produces hair |
