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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 |