| A | B |
|---|
| homeostasis | balance |
| organ system | most complex organization |
| smooth muscle | digestive system, internal organs |
| skeletal muscle | attached to bone, work in pairs |
| muscle pairs | found in skeletal muscles |
| red marrow | produces blood cells |
| yellow marrow | fat storage |
| compact bone | hard bone |
| spongy bone | bone contains spaces |
| ligament | attaches bone to bone |
| tendon | attches muscle to bone |
| calcium | necessary for bone health |
| gliding joint | joint found in wrist and ankle |
| pivot joint | joint found in neck |
| ball and socket joint | joint found at hip |
| hinge joint | joint found at elbow and knee |
| epidermis | outer most layer of skin |
| dermis | 2nd layer of skin, contains many structures |
| subcutaneous tissue | underneath the dermis, contains fat |
| melanin | pigment that protects skin from sun damage |
| perspiration | sweat |
| cell | smallest level of structure and function of all living things |
| tissue | organized groups of the same cells |
| organ | organized group of tissues |
| cardiac muscle | found only in the heart, striated |
