The Skeletal System
Muscles and bones are directed by the brain and create movement for your body and physical activity.
- The Human skeleton has 206 bones and most are involved in movement
- Bones are 50% fluid and 50% solid
Function
- Your bones act to protect vital organs and support soft tissues, Bones provide our structure without them we cannot stand upright or move in any direction.
- Bones are involved in the production of red blood cells
- They hold minerals like calcium and potassium
- Muscles attach to your bones in order to provide movement (levers)
- Long bones store fat
Classification
Long Bones: are seen in a lot of of your upper and lower extremities. They serve as levers for movement,
- Examples include: femur, humerus
Short Bones: are usually equal in length and width. They provide support and stability and give strength to your joints.
- Examples include Tarsals (ankles), Carpals (wrists)
Flat Bones: provide a broad area for muscle attachment. They also protect internal organs.
- Examples: ribs, scapula, skull, sternum
Irregular Bones: Bones that fall outside of the other categories. They can protect internal organs and provide support
- Examples: Ishium, pubis, vertebrae
Parts of the Skeleton
Axial: provides protection and support. it includes your head neck, thorax and vertebrae.
Appendicular: Protects your intestines and helps with movement. It includes your arms, legs, pelvis and shoulder girdle.
