Visceral System: The visceral system is the body’s organ systems—lungs, heart, and organs of the digestive, urinary, reproductive, and circulatory systems — found within the major cavities of the thorax, abdomen, and pelvis. Viscera don’t include of the central nervous system (CNS) organs, head/neck, or musculoskeletal system — nor the skin. It is divided in two divisions:

• Somatic motor division carries signals to the skeletal muscles.
• Visceral motor (or efferent) division, also called the autonomic nervous system (ANS), functions automatically and continuously, without conscious effort, to supply efferent neurons to smooth muscle, cardiac muscle, and glands