What are the "somatic" and the "autonomic" parts of the peripheral nervous system?

What are the "somatic" and the "autonomic" parts of the peripheral nervous system?

Les Weiner (Former Chair of the Department of Neurology, University of Southern California) gives expert video advice on: What are the different areas of the spinal cord, and what are their functions?; How does pain work in the nervous system? and more...

The somatic would mean the muscles of your hands and arms and so forth. The sensory input from your periphery from your skin: How do you know where your feet are, etc.? And there's the autonomic, which basically is going from the brain to all of these visceral organs. The reason it's called autonomic is because it can be influenced by emotion, it can be influenced by what the brain does, but it works all the time. So, otherwise your heart would not continue to beat? And your GI tract would not continue to digest? It opens and closes blood vessels, depending on what the circumstances are, and in doing that it also controls blood pressure.