Functions of the Skeletal System

1. Support

• Structural Framework: Provides structural support to the body.
• Soft Tissue Support: Helps support soft tissues.
• Attachment for Tendons: Provides places of attachment for tendons.

2. Protection

• Protects Internal Organs:
  • Pelvis: Protects reproductive organs.
  • Ribs: Protects lungs and heart.
  • Spine: Protects the spinal cord.
  • Skull: Protects the brain.

3. Movement

• Muscular Attachment Surface: Provides surfaces for muscular attachment.
• Muscle Contraction: Muscles pull on bones to produce movement.

4. Mineral Homeostasis

• Calcium and Phosphorus Storage: Stores important minerals like calcium and phosphorus.

5. Bone Marrow and Blood Cell Production

• Spongy Bone: Contains red marrow.
• Medullary Cavity: Contains yellow (fatty) marrow.
• Red Marrow: Site of red blood cell production.
• Conversion of Marrow: Yellow marrow can convert to red marrow when more red/white blood cells are needed and revert back after production.
• Hematopoiesis: Term for blood cell production.

6. Storage of Fats

• Yellow Marrow: Responsible for storing fats, mainly triglycerides, composed of adipose cells.