An amazing-language article!

Look at this wonderful article: http://www.livescience.com/humanbiology/060710_mm_joints_crack.html

It contains so many interesting English words! The fact is that words like Knuckle, tendon, ligament ,pivot, reabsorb and so on are not widely know! An average schoolboy (or take an average schoolgirl, makes the same) doesn't know them! I advice you to read this article about your joints and to decide honestly if all words and meanings are familiar to you!