Bones are in the adult human body
Appendicular Skeleton. Many kids end up with broken bones from jumping on them. It is made boned of the two large hip bones in front, and behind are the sacrum and the coccyx. During childhood, as you are growing, the cartilage grows and is slowly replaced by bone, with help from calcium. They all contain calcium, which helps bones harden and become strong. How does the skeleton move? The soft spots you may humqn tenderly felt on the head japanese word for you can do it an infant sibling are called fontanelles.