Rib 3 (right) — true rib

Function

Right third hoop of the cage, gliding at its costovertebral joints to widen the chest in inspiration.

Landmarks

• Costal groove
• Tubercle
• Angle

Articulations (joints)

• T2–T3 vertebrae
• Sternum via third costal cartilage

Clinical relevance

Multiple right upper rib fractures reduce chest-wall compliance; watch for adjacent lung contusion.