I. Introduction Pu_rpose Nerves in the human body are truly remarkable. They create an intricate highway of signals so that your brain can perceive what you are feeling and experiencing, both in the real world and in your body. Not surprisingly, nature has found a way to make sure those signals are sent quite fast. If a lion is sinking his teeth into you, you don't want your brain to nd out three minutes later. But What exactly is the speed at which electrical signals are sent through nerves and into your brain? In this lab we will learn an ingenious way to calculate with nothing more than a timer. Nucleus Axon tennlnal Soma Dendrite I Materials/Equipment o Rulers o Humans