Sternum and Ribs Thorax
False Ribs
"Vertebrochondral" Ribs Attach to sternum indirectly or not at all. Ribs 8-10 attach to sternum indirectly decreases in length
True Ribs (7)
"Vertebrosternal" Increases in length Attach directly to sternum
Typical "True" Rib parts
1. Head of Rib 2. Neck of Rib 3. Tubercle of Rib 4. Shaft 5. Articular Facets 6. Coastal Groove
Ribs
12 Pairs : (7) True ribs (5) False ribs
Sternum (1)
Lies in the anterior midline. The breast bone that looks like a dagger. 1. Jugular notch "Suprasternal Notch" 2. Clavicle Notches "Collarbone location" 3. Manubrium "Knife Handle" 4. Sternal angle "allowing body to inhale" 5. Body "Bulk of the sternum: 6. Xphoid process "Sword like"
Floating ribs
Ribs 11-12 No anterior attachment Lie embedded in the muscles of lateral body wall
Inferior Coastal Margin
Ribs 7-10 Diverge from Xiphisternal joint where they form infrasternal angle. (Goes down)