Question

What are the thin fibers of the human nervous system called?

Answer 1

The thin fibers of the human nervous system are called nerves. These fibers emanate from the brain and the spinal cord and branch to every part of the body. They convey impulses of sensation, motion, pain, etc and basically are responsible of transmitting signals between the brain or spinal cord and all other parts of the body. They are a critical part of the Nervous system.  

Answer 2

Those fibres are called nerves. Nerves are what causes us to feel anything we touch and can sense temperature as well.