We need our bones for PROTECTION

​Bones protect your internal organs

​ON YOUR NOTES:

The skeletal system provides bony protection for soft, internal organs. The skull protects the brain; the thorax (sternum, rib cage, and spine) protects the heart, lungs, and other organs.

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Bones provide STORAGE

​Your bones store important materials

​ON YOUR NOTES:

Bones store materials such as fat, calcium, and other minerals (like phosphorus) for later use.

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• Fat-stored in the yellow bone marrow of long bones

• Calcium-important for blood clotting, helping muscles contract, and regulating your heart beat

• Phosphorus-​helps the body store and use energy, helps reduce muscle pain after working out

SUPPLY

​Blood Cells are made in your bone marrow

​ON YOUR NOTES:

Larger bones of the skeletal system contain bone marrow. Red marrow is responsible for production of red blood cells that are responsible for carrying oxygen to body tissues. White blood cells are also produced that are important for the body's immune system.

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Bones provide SHAPE & SUPPORT

​ON YOUR NOTES:

The skeletal system provides a framework and attachment points for muscles, tendons, ligaments, skin and organs. Bones such as the femur in the legs bear the weight of the upper body. The spinal column makes the body straight and supports the head.

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MOVEMENT

Without your bones and muscles you could not move your body

The skeletal system provides a framework for muscles to attach. When they contract they pull on the bones of the skeleton, which act like levers to create movement. Leg bones come together at the knee to form a hinge joint that enables the knee to move back and forth. The hip has a ball and socket joint that allows for movement in multiple directions.

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​ON YOUR NOTES:

Review

Why we need our bones:

1. Protection

2. Storage

3. Supply

4. Shape and Support

5. Movement

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