THE SKELETON SYSTEM

Skeletal System Structures: Bones, Cartilage, Ligaments, tendons Functions: Supports the body, protects internal organs, allows movement, stores mineral reserves, provides a site for blood cell formation

Bone Facts! It is composed of 206 named bones of various shapes and sizes. Strong bands of connective tissue called ligaments hold the bones together. Between many of the bones there are pads of firm, smooth, slightly elastic connective tissue called cartilage. The cartilage works to cushion the ends of the bones where they bump together at a joint. Bones are alive and continue to grow until about age 25. They are hard due to the high concentration of certain minerals such as calcium and phosphorus. All of the minerals, which the body needs for bone growth or repair, are found in food.

Inside of Bones!

Joints 2 Types Immovable: do not permit movement Examples: skull and fused bones like tail bone Movable: permit movement depending upon the type of joints Examples: elbow, hip, wrist, shoulder Most of our joints are considered movable!

Types hinge joints found in knee and elbow permit back and forth motion in only one direction ball-and-socket joints The hip and shoulder joints They permit nearly a full range of motion pivot joint The joint at the base of the skull It allows movement of the head in a circular motion gliding joints The joints of the wrist and ankle. The many small bones found in the wrist and ankle move slightly over one another permitting movement to occur

ASIMO = Advanced Steps In Mobility http://asimo.honda.com/default.aspx