Included in the package are six well-preserved arm and leg bones, each of which is labeled. There is one radius (R1) and one ulna (U1); these are the two bones that connect the wrist and elbow.

PRESENTER:'Our skeleton has over 200 bones from the largest - our leg bone, or our femur, to the smallest - the bones in our ears. PRESENTER:'Bones are made of calcium and other minerals.