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science vocab ch 9
tissue, muscles, systems
Term | Meaning |
---|---|
homeostasis | the state of having a stable internal environment. |
tissue | a group of similar cells working together |
epithelial tissue | covers and protects underlying tissue |
nervous tissue | sends electrical signals through the body |
organ | two or more tissues working together |
organ system | organs that work together |
muscle tissue | is made up of cells that can contract and relax to produce movement |
connective tissue | joins, supports, protects, insulates, nourishes, and cushions organs |
skeletal system | are the structures that connect bones to catilage. |
compact bone | the bone tissue that does not have any visible open spaces |
muscular system | is made up of muscles and the connective tissue that attaches the muscles to the bone. |
smooth muscle | is found in the digestive tract and the walls of blood vessels |
cardiac muscles | are a type of muscle found only in your heart |
skeletal muscle | is attached to your bones for movement and it helps protect your innner organs |
integumentary system | your nails, hair, and skin. |
sweat glands | make sweat |
melanin | a darkening chemical in skin |
epidermis | is the innner layer of the two. |
dermis | the deeper, thicker layer |
hair follicle | is formed at the bottom of a tiny sac |