The end result is the simplest form of etching. There are more complicated ways to create more intricate etchings by using a number of different plates and colors. There is also a process to add different tones to the image that involves adding resin dust to the plate and heating it.
Nerves carry electrochemical signals to and from different areas of the nervous system as well as between the nervous system and other tissues and organs. Nerves are divided into four classes: Cranial nerves connect your sense organs (eyes, ears, nose, mouth) to your brain.
The sense organs contain receptors that are sensitive to stimuli. The nervous system consists of the central nervous system-brain and spinal cord-and peripheral nerves. Nerve impulses travel through the axons of neurones-nerve cells.he sense organs contain receptors that are sensitive to stimuli. The nervous system consists of the central nervous system-brain and spinal cord-and peripheral nerves. Nerve impulses travel through the axons of neurones-nerve cells.