• What is a Bone

• The Inside of a Bone

• Four Main Jobs of a Bone

• The Spine

• Ribs

• Hands and Feet

• Hips and Legs

• Arms

• Joints

• The skeletal system is made up of the bones and cartilage that forms the framework of your body.

• We have bones so that we are not a puddle of skin and guts on the floor.

• Babies have 300 bones.

• Adults have 206 bones.

• A bone is made up of salts, water, and tissue.

• Inside a bone there is a jelly substance called bone marrow.

• Bone marrow produces blood cells for the body.

1. To protect your body and give it shape.

2. To protect your internal organs.

3. To provide a scaffolding for your muscles, allowing you to move.

4. To store minerals and make blood cells.

• The spine is the central support for the body.

• The spine is made up of separate bones called vertebrae.

• Between each vertebrae is cartilage which keeps bones from rubbing against each other.

• There are 26 vertebrae in the human body.

• Ribs are the long curved bones which form the rib cage.

• Rib cage is made up of 12 vertebrae, 24 ribs and a breastbone in three parts.

• Ribs surround the chest, enabling the lungs to expand and thus facilitate breathing by expanding the chest cavity.

• They serve to protect the lungs, heart, and other internal organs of the thorax.

• The bones in your hands and feet are VERY flexible.

• The foot has 26 bones. (tarsals, metatarsals, and phalanges) .

• The hand has 27 bones. (metacarpals, carpals, and phalanges) .

• The hip bone helps us to stand upright and move.

• The main bones of the legs are the tibia, fibia, and femur.

• The patella (kneecap) is also important!

• The bones in the arm are very flexible.

• The three bones that make up the arm are the ulna, radius, and humerus.

• The two bones that form the shoulder are the clavicle and the scapula.