Rib Structure and Sternum Overview

Rib Structure Overview

• Rib Types:
  • True Ribs: 14 total
  • Attach directly to sternum via costal cartilages
  • False Ribs: 10 total
  • First 3 pairs attach indirectly to sternum via costal cartilages of 7th ribs
  • Last 2 pairs do not attach to the sternum (floating ribs)

Sternum Details

• Structure:
  • Breastbone, dagger-shaped
  • Consists of
  • Manubrium: Superior portion
  • Xiphoid Process: Cartilage at the lower end

Rib Pairing

• Upper 7 Pairs: True ribs
• Lower 5 Pairs: False ribs