We probably inherited our joints from… a fish
While the common ancestor of vertebrates with synovial joints is still a mystery, the oldest specimen with evidence of these ...
EMS15d
Chest trauma: EMS assessment and treatment
Anteriorly, the first seven rib pairs directly connect to the sternum through cartilaginous attachments ... veins and nerves. The rest of the bony structure of the chest includes the clavicles ...