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 sensory function of the nervous system involves collecting information from sensory receptors that monitor the bodyâs internal and external conditions. These signals are then passed on to the central nervous system (CNS) for further processing by afferent neurons (and nerves).