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).
A nerve cell, or neuron, is the basic unit of the nervous system. It transmits information to and from the brain. The structure of a neuron allows the transmission to be quick.1  The Structure & Function of Muscle Cells.2  What Is the Function of Blood Cells? nerve cell, or neuron, is the basic unit of the nervous system. It transmits information to and from the brain. The structure of a neuron allows the transmission to be quick. 1  The Structure & Function of Muscle Cells. 2  What Is the Function of Blood Cells?