| 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 | one of the four main types of tissue in the body; the tissue that covers and protects underlying tissue |
| nervous tissue | one of the four main types of tissue in the body; the tissue that sends electrical signals through the body |
| muscle tissue | one of the four main types of tissue in the body; |
| connective tissue | one of the four types of tissue in the body; functions include support, protection, insulation, and nourishment |
| organ | a combinationof two or more tissues that work together to perform a specific function inthe body |
| skeletal system | a collection of organs whose primary finction is to support and protect the body; includes bones, cartilage, ligaments, and tendons |
| compact bone | the type of bone tissue that does not have open spaces |
| spongy bone | a type of bone tissue that has many open spaces and contains marrow |
| cartilage | a flexible 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 | the type of muscle found in the blood vessels and the digestive tract |
| cardiac muscle | the type of muscle found in the heart |
| skeletal muscle | the type of muscle that moves bones and helps protect inner organs |
| tendon | a tough connective tissue that connects skeletal muscles to bones |
| integumentary system | a collection of organs that helps the body maintain a stable and healthy internal environment |
| sweat glands | small organs in the dermis layer of the skin that release 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 |
