Notes+Skeletal+System

 http://www.fallingpixel.com/products/626/mains/Skel%201.jpg http://www.sciencedaily.com/images/2007/10/071016131514-large.jpg http://www.microscope.org/human-anatomy/images/sh000-skeleton.jpg http://upload.wikimedia.org/wikipedia/commons/thumb/c/cc/Skeleton_whole_body_ant_lat_views.svg/395px-Skeleton_whole_body_ant_lat_views.svg.png
 * The femur is the body's largest bone
 * The skeletal system provides shape and form, supports, protects organs, allows body movement, produces blood for the body, and stores minerals
 * The mandible, or jawbone, is the strongest bone in the body
 * The musculo-skeletal system allows our body to move as it does
 * Muscles are attached to bones by tendons
 * Bones are connected to each other by ligaments
 * The Skeleton is divided into two parts, axial and appendicular
 * The axial Skeleton consists of the skull, sternum, ribs, and the vertebral column
 * The appendicular skeleton consists of both the upper and lower extremities,the shoulder girdle, and the pelvic girdal
 * There are 206 bones in a grown adult
 * There are over 300 bones in a baby
 * When a bone breaks in two, it is called a complete fracture
 * Bones produce red blood cells
 * the average femur can take 560 pounds of weight it is the strongest bone in the body.
 * bones have no nerves.
 * lack of calcuim can cause weaking of the bone wich in later years will cuase osteoporosis,this is more common for women.
 * Bones fall into four categories: long bones, short bones flat bones, and irregular bones
 * Long bones are longer than they are wide and work as levers ex. bones of the upper and lower extremities
 * Short bones are short, cube-shaped, and are in the wrists and ankles
 * Flat bones have broad surfaces for the protection of organs and the attachment of bones ex. ribs, cranial bones, and bones of the shoulder girdle
 * Irregular bones don't fall into any of the previous categories. Their shape, size, and surface features
 * Types of bone are spongy or cancellous, or compact or dense
 * Spongy bone is very porous and gives the bone strength