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.
A sympathetic nerve block can be used to diagnose and/or treat pain disorders involving the sympathetic nervous system. The injection consists of a local anesthetic. The sympathetic nervous system is a network of nerves throughout your body. The nerves branch from your spine and control some body functions, such as the closing of blood vessels. A problem with these nerves can affect blood flow and cause symptoms in the hands or feet. They may hurt, burn, feel cold, or be tender to touch. The sympathetic nervous system is controlled by bunches of nerves called ganglions. One large ganglion, called the stellate ganglion, helps control nerves in the upper body.