It is the only bone in the upper arm, and it is also the largest bone in the upper extremity. The top of the humerus joins with an area called the glenoid fossa on the scapula or shoulder blade to ...

This image shows the upper and lower limb bones of those adults found in Sima de los Huesos, Atapuerca, Spain. Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news ...