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The PNS in this classification is divided into two principal subdivisions: The functional classification of the nervous system is only concerned about the structures of the peripheral nervous system (PNS). These nerves serve as the communication lines of the body.įunctional Classification of the Nervous System The cranial nerves, on the other hand, carry impulses to and from the brain. The spinal nerves carry impulses to and from the spinal cord. It is the part of the nervous system outside the CNS. The PNS is consisting of the nerves that extend from the brain and the spinal cord. It is the CNS that interprets an incoming sensory information and sends and instruction basing on the past experience and current condition. These organs occupy the dorsal body cavity and act as the INTEGRATING and COMMAND CENTERS of the nervous system. The CNS consists of the brain and the spinal cord. Structurally, the nervous system is classified into the central nervous system and the peripheral nervous system. Structural Classification of the Nervous system As the nervous system has reached a decision of what response and appropriate action to be done in response to the stimuli, it then effects a response by activating muscles or glands through motor output.This is the process known as INTEGRATION. It is the working of this system to make decision about what should be done at each moment. Another important function of the nervous system is to process and interpret the sensory input or gathered data.

Any changes or stimuli occurring are noted by the nervous system and the gathered data is now called a sensory input. The nervous system utilizes the million sensory receptors to carry out this function. To monitor changes that takes place inside and outside the body.Every thought, movement and emotions reflect the activity of the nervous system. It coordinates the action of an animal and transmits signals between the different parts of the body. This is the master controlling and communicating system of the body. The nervous system is an organ system that contains a network of specialized cells called neurons.