RIBS ANATOMY
Ribs - General Structure, Preview from the app. Download 3D OSTEOLOGY for full 3D control—multiple views, x-ray mode, and unlimited zoom.
TABLE OF CONTENTS
GENERAL FEATURES
Ribs - General Features, Sourced from the app 3D OSTEOLOGY
- Twelve paired bones comprising the thoracic cage
- Provide protection for thoracic organs
- Posterior articulation with vertebral column
- Anterior termination as cartilage
CLASSIFICATION
- Ribs are classified based on their structural features and sternal attachment
Based on Structural Features
- Typical Ribs:
- Share common structural characteristics
- Atypical Ribs:
- Display unique features not found in all ribs
- Include ribs 1, 2, 10, 11, and 12
Based on Sternal Attachment
True Ribs (Vertebro-sternal Ribs)
True Ribs (Ribs 1-7), Preview from the app. Download 3D OSTEOLOGY for full 3D control—multiple views, x-ray mode, and unlimited zoom.
- Comprise ribs 1 through 7
- Connect directly to sternum via individual costal cartilages
False Ribs
False Ribs (Ribs 8-12), Preview from the app. Download 3D OSTEOLOGY for full 3D control—multiple views, x-ray mode, and unlimited zoom.
- Comprise ribs 8 through 12
- Lack direct sternal attachment
- Subdivided into:
- Vertebrochondral Ribs (ribs 8–10):
- Attach indirectly to sternum
- Costal cartilages join cartilage of rib above
- Floating Ribs (Vertebral Ribs) (ribs 11–12):
- No anterior attachment to sternum
- Terminate freely in posterior abdominal musculature
- Vertebrochondral Ribs (ribs 8–10):
BIBLIOGRAPHY
1. Henry G, Warren HL. Osteology. In: Anatomy of the Human Body. 20th ed. Philadelphia: Lea & Febiger; 1918. p. 129–97.
