The human skeleton is made up of 206 bones. The functions of the skeleton are to provide support, give our bodies shape, provide protection to other systems and organs of the body, to provide attachments for muscles, to produce movement and to produce red blood cells.
Formation of Bones
Bones are formed by the ossification of cartilage. What this really means is all bones start off as cartilage (normally in the womb) and they gradually turn to hard bone (ossification) over a period of years. Calcium is needed for strong bone growth.
Main Bones in Skelton
- The Skull - Cranium, Mandible and Maxilla
- Shoulder girdle - clavicle and scapula
- Arm - humerus, radius and ulna
- Hand - Carpals, Metacarpals and Phalanges
- Chest - Sternum and Ribs
- Spine - Cervical area (top 7 vertibrae), Thoracic (chest 12), Lumbar (bottom 5 vertebrae), Sacrum (5 fused or stuck together bones) and Coccyx (the tiny bit at the bottom of the spine).
- Pelvic girdle - Ilium, Pubis and Ischium.
- Leg - Femur, Tibia and Fibula
- Ankle - Talus and calcaneus
- Foot - Tarsals, Metatarsals and Phalanges
The smallest bone in the human body is the stapes or stirrup bone, located inside the ear. The longest bone is Femur, located in leg.