Pine trees are evergreens with long, needle-shaped leaves. They are widely planted in North America, particularly in northern areas. Pine trees produce cones for propagation of the species. Pines are coniferous trees and there are about 100 or so species of pines world wide.
The nervous system has three general functions: a sensory function, an interpretative function and a motor function. 1  Sensory nerves gather information from inside the body and the outside environment. 2  The nerves then carry the information to central nervous system (CNS).
The autonomic nervous system is a control system that acts largely unconsciously and regulates bodily functions such as the heart rate, digestion, respiratory rate, pupillary response, urination, and sexual arousal.he autonomic nervous system is divided into the sympathetic nervous system and parasympathetic nervous system. The sympathetic division emerges from the spinal cord in the thoracic and lumbar areas, terminating around L2-3.