Rib 7 (right) — true rib

Function

Right lower true rib, longest in the cage, capping the anterior thoracic outlet with its costal-margin cartilage.

Landmarks

• Costal groove
• Angle
• Costal margin

Articulations (joints)

• T6–T7 vertebrae
• Sternum via seventh costal cartilage

Clinical relevance

The gallbladder fundus lies lower, at the tip of the right ninth costal cartilage in the mid-clavicular line — the point pressed for Murphy's sign.