The nervous system is composed of all nerve tissue in the body. This organ system forms a communication and coordination network between all parts of the body. It plays a major role in everyday activities such as breathing, walking even blinking. It is made up of nerve tissues to receive and transmit stimuli to nervous centers and initiate response. Neurons are nerve cells that transmit signals from one location of the body to another. With damage to the nervous system the body would not be able to function properly. The body has to be well taken care of in order to insure proper regulation. The two anatomical divisions that work hand in hand to help regulate the nervous system are the central and peripheral nervous system. According to the Campbell’s seventh edition biology book the nervous system is the most intricately organized data processing system on earth. It is a complex collection of nerves and specialized cells.
The three interconnected functions of the nervous system are sensory input, integration and motor output. Sensory input is the conduction of signals from sensory receptors to the central nervous system. Integration is the analysis and interpretation of the sensory signal and the formulation of appropriate responses. The motor output function is the conduction of signals from the integration centers to effector cells, which performs the body’s responses.
The central nervous system (CNS) consists of the brain and the spinal cord. The brain and the spinal cord serves as the collection section of the nerve impulses. With damage to the peripheral nervous system the central nervous wouldn’t be able to interpret the stimuli’s because they wouldn’t be able to receive them. This system is considered to be the main processing center of the body. The CNS is surrounded by membranes called meninges. Meninges are layers of connective tissue. They help protect this particular anatomical division.
It is said that the brain is about two percent of body weight and it uses twenty percent of the body’s oxygen. According to the brain sourcebook the brain is the fattest organ in the body. It is made up of 60 percent fat. The brain is divided into three parts. These three parts include the cerebrum, cerebellum, and the brain stem.
Although the central nervous system is considered to be the main processing center the brain is the master control center. It has sensory centers that integrate data from sense organs. To help keep the brain protected it is covered by the scalp, cerebrum or otherwise known as the skull and vertebrae. The brain is also protected by three layers of meninges. The first layer is Dura mater. Dura mater is the outer layer. This layer consists of connective tissues, blood vessels and nerves. The next layer is the middle layer. The middle layer is called the arachnoid layer. This layer is elastic and web like. The inner layer that covers the brain is called pia mater. Pia mater contains nerves and blood...