the skeletal system. the skeletal system consists of: 1. bones 2. cartilage 3.connective tissue...

The Skeletal System

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The Skeletal System

The skeletal system consists of:

1. Bones

2. Cartilage

3. Connective tissue

***There are about 206 bones in an adult

Bone Functions

1. Protection• Heart/ lungs: ribs• Spinal cord: vertebrae• Brain: skull

2. Storage• Bones store minerals that help muscles and

nerves work• Long bones store fat for energy

Page 4: The Skeletal System. The skeletal system consists of: 1. Bones 2. Cartilage 3.Connective tissue ***There are about 206 bones in an adult

Bone Functions continued

3. Movement• Skeletal muscles pull on bones to help you move

4. Blood cell formation

• Some bones are filled with marrow, which makes blood cells.

Page 5: The Skeletal System. The skeletal system consists of: 1. Bones 2. Cartilage 3.Connective tissue ***There are about 206 bones in an adult

Internal Structure of Bone

Page 6: The Skeletal System. The skeletal system consists of: 1. Bones 2. Cartilage 3.Connective tissue ***There are about 206 bones in an adult

Parts of Bone

• Compact bone: No visible spaces, contains blood vessels

• Spongy bone: Has open spaces, but provides strength and support

Page 7: The Skeletal System. The skeletal system consists of: 1. Bones 2. Cartilage 3.Connective tissue ***There are about 206 bones in an adult

Parts of bone continued

• Red Marrow: Makes red and white blood cells

• Yellow Marrow: Stores fat in long bones

• Cartilage: Flexible connective tissue that is sometimes replaced by bone

Page 8: The Skeletal System. The skeletal system consists of: 1. Bones 2. Cartilage 3.Connective tissue ***There are about 206 bones in an adult

Osteoblasts

• Cells that make bone by depositing connective tissue and minerals

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