a. Develop an outline of the components of the human nervous system, inclusive of the CNS (central nervous system) the somatic system, and both divisions of the autonomic nervous system (ANS). Include in your outline the major distinctions among these systems.
Human Nervous System – Overview
The human nervous system is composed of all nerve tissues in the body. The functions of nerve tissue are to receive stimuli, transmit stimuli to nervous centers, and to initiate response
The nervous system has two distinct parts -- CENTRAL and PERIPHERAL. The central part is made up of the brain and spinal cord. The peripheral part of the nervous system is said to be peripheral because it is outside the central nervous systems.
The human nervous system contains approximately 10 billion nerve cells. These neurons are the basic building blocks of the nervous system. Neurons consist of the nerve cell body and various extensions from the cell body. These extensions, or processes, are the dendrites (branches off the cell that receive electrical impulses), the axon (the electrical wiring and conduit tube that conducts impulses), and specialized endings (terminal areas to transfer impulses to receivers on other nerves or muscles).
CENTRAL NERVOUS SYSTEMThe central nervous system is the processing center for the nervous system. It receives information from and sends information to the peripheral nervous system. The main organs of the central nervous system are the brain and spinal cord. The brain processes and interprets sensory information sent from the spinal cord. Both the brain and spinal cord are protected by three layers of connective tissues called the meninges.Spinal CordThe spinal cord is a cylindrical shaped bundle of nerve fibers that is connected to the brain. The spinal cord runs down the center of the protective spinal column extending from the neck to the lower back. Spinal cord nerves transmit information from body organs and