How did the achilles tendon get the name?
In a Greek mythology story a water nymph named Thetis was trying to make her son, Achilles, immortal, so she dipped him in the River Styx. All of him went under the water except his heel, which she was holding so she could pull him back up. The water from the River Styx made all of Achilles invulnerable, but his heel, which was not dipped, was completely vulnerable, and Achilles died from being shot in the heel with a poisonous arrow.
