There are 3 classifications of burns. a) First degree burn only involves the outer layer of skin. b) Second degree burn involves several layers of the skin tha become blistered. c) Third degree burn is all layers of the skin,underlying tissue and organs. Nerves are damaged and sometimes destoyed.
The eye and nerves connected to the eye can visualize color by stimulation of colored cones within the retina from the different lightwave frequency that is projected by object.
Nerve signals depend on sodium moving in and out of cells.
Signals in the fastest nerve fibers can travel at about 268 miles per hour.
Every eye has a blind spot where the optic nerve connects, but your brain fills in the missing part, so you don't notice it.
The "funny bone" isn't a bone. It's the ulnar nerve.
A narwhal's tusk may contain millions of nerve endings.