bones, muscles, skin
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| skeletal system | Provides shape and support, enables you to move, protects your organs, produces blood cells,and stores certain materials until your body needs them. | ||||
| vertebrae | 26 small bones down your back. | ||||
| marrow | The spaces in bones that contain a soft connective tissue. | ||||
| cartilage | a connective tissue that is more flexible than bone and that gives support to some parts of the body | ||||
| joint | a place in the body where two bones come together | ||||
| moveable joints | Movable joints allow the body to make a wide range of movements | ||||
| immovable joints | some joints in the body connect bones in a way that allow little to no movement | ||||
| ball and socket joint | allows the greatest range in motion. | ||||
| pivot joint | allows one bone to rotate around another. | ||||
| hinge joint | allows extensive forward or backword motion. | ||||
| gliding joint | allows one bone to slide over another. | ||||
| Fracture | a break in the bone, can occur when you fall so that all of your weightis placed on only a few bones. | ||||
| sprain | occurs when ligaments are stretched too far and tear in places. | ||||
| dislocation | occurs when a bone comes out of its joint. | ||||
| X-rays | a form of energy that travels in waves. | ||||
| x-ray fact | because most x-rays pass through the skin and other body tissues, the x-rays strike the photographic film beneath the area. | ||||
| MRI | a method for taking clear images of both of the bones and soft tissues of the body. | ||||
| Preventing skeletal system injuries | Simple preventive measures include warming up before exercises, wearing protective gear, and exercising in safe places. | ||||
| involuntary muscles | not under your conscious control. | ||||
| voluntary muscles | muscles that are under your control. | ||||
| muscle tissue | three kinds of tissue: skeletal, smooth, and cardiac. | ||||
| skeletal muscles | a muscle that is attached to the bones of the skeleton. | ||||
| tendon | a strong connective tissue that attaches muscle to bone. | ||||
| smooth muscles | involuntary. They work automatically to control many types of movements. | ||||
| cardiac muscle | has characteristics in common with both smooth and skeletal muscles. | ||||
| muscles at work | because muscle cells can only contract, not extend, skeletal muscles must work in pairs. | ||||
| epidermis | the outermost layer of the skin. | ||||
| melanin | a pigment, or colored substance, that gives skin its color. | ||||
| dermis | the lower layer of the skin. | ||||
| pores | openings in your skin. | ||||
| follicles | structures within the dermis. | ||||
| skin care | eat properly, drink enough water, limit your exposure to the sun, and keep your skin clear and dry. | ||||
| cancer | a disease in which some body cells divide uncontrollably. |
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Created by:
chrisevslee
on 2010-10-20