1. Based on strength to weight ratio, bone is stronger than steel! One cubic inch of bone can withstand 8626 kg of compressive pressure. However, forces much lower than this are able to break bone depending on the speed of impact and direction of the force applied.
2. Old bone tissue is replaced by new tissue on an ongoing basis. Over a 7 year period, the body grows the equivalent of a new skeleton through this process!
3. The 11th and 12th pairs of ribs (the average person has 12 pairs) are called floating ribs because they only attach to the vertebral column and not the sternum which the other pairs of your ribs are attached to. They don’t actually just float around attached to nothing.
4. The funny bone is not actually a bone. It is a part of the ulnar nerve located at the back of the elbow. A blow to this area causes the tingling sensation that spreads across your forearm. Your reaction to the tingling may cause others to laugh, but it’s actually quite painful!
5. ~99% of all the calcium found in the body is stored in your bones!
Now that you know all this, think about dressing up as a skeleton for halloween. You will be able to start some pretty interesting conversations ;)
Bolander RP, Neto OP, Bir CA, The Effects of Height and Distance on the Force Production and Acceleration in Martial Art Strikes, Journal of Sports Science and Medicine, 2009, 8(3):47-52.