week 4 skeletal structures - Skeletal System Anatomy Bones...

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Skeletal System Anatomy Bones can be classified into three categories, the type of bone, joints and ligaments, and movement classification. Bones come in four different classifications. Long bones, short bones, flat bones and irregular bones. Long bones are longer than they are wide, such as the arms (ulna, radius and humorous) and legs (femur, tibia and fibula). Short bones are equal in width and length, like the wrists (carpals) and ankle (tarsals). Flat bones are thinner and plate-like, such as the skull, ribs and sternum. Irregular bones are odd in shape and aid in the connection between other bones; like the hip bones (ililm) and vertebrae. An example of all of these is shown below. Two or bones that join together form an articulation: or joint. Joints are responsible for helping the body move. Joints are classified by structure or function. In terms of function they can be synovial (freely moveable) Like the elbow, cartilaginous (slightly moveable) like the spine or ribs or Fibrous (fixed or immobile) such as the skull. Structure wise they can be classified into pivot joints,
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like in your neck and forearm. Ball-and-socket joint, like in the hips and shoulders.
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  • Fall '16
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  • Tarsals

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