Bones II
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11 terms
Terms | Definitions |
|---|---|
 homeostasis | keeping a stable environment in the body; keeping the body in balance |
| tendon | connective tissue that joins muscles to bones |
| steroids | hormones that make muscles bigger and stronger but can do damage to the body when not used correctly |
| melanin | chemical in skin that determines skin color |
| hair follicle | where hair grows; where new cells are added to make hair |
| epidermis | it is the thinner, top layer of skin, made of epithelial tissue, contains keratin (a protein that makes skin tough) |
| dermis | the thicker, deeper layer of skin, made of mostly connective tissue, contains collagen (a protein that makes skin tough and helps with flexibility) |
| moles | darkened areas on the skin that need to be watched in case they change shape or color |
| smooth muscle | type of muscle found in digestive tract and blood vessels: involuntary, doesn't get tired |
| cardiac muscle | type of muscle in the heart: involuntary, doesn't get tired |
| skeletal muscle | type of muscle attached to bones for movement: voluntary (picking up a pencil) and involuntary (blinking), often works in pairs, can get tired |
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