Nervous System Divisions
The body has two main division of the nervous system. Ther two main divisions are the central nervous system (CNS), which consists of the brain and spinal cord, and the peripheral nervous system (PNS). These nervous systems have different functions. In the central nervous system, the brain carries out most of the “computing” in the nervous system. It then communicates with the rest of the body through the spinal cord. The peripheral nervous system carries information between the CNS and the rest of the body. The PNS also contains two subdivisions. These two subdivisions are the somatic nervous system (SNS) and the autonomic nervous system (ANS). The two subdivisions have different functions, but their functions work together. The
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5095 Words | 21 PagesThe two systems have a different mode of action. While the nervous system is static, its functions are executed by nerve fibers everywhere in the body. The immune system, on the other hand, is largely migratory in its responses using the blood, lymphatic vessels, and lymphoid organs to recruit mediators to sites of interest.
Sympathetic Nervous System
858 Words | 4 PagesIt consists of the sympathetic nervous system and the parasympathetic nervous system. The primary function of the sympathetic system is to stimulate your fight-or-flight response, while the parasympathetic system enables you to maintain normal functions such as digesting and keeping the body at rest. Part 2: The Structure of the Sympathetic Nervous System Transmission of signals in the sympathetic nervous system is accomplished through a network of nerve cells called neurons. There are two types of neurons – the preganglionic neurons have short fibers that originate from the spinal cord’s thoracolumbar segments, which communicate with ganglia adjacent to the spinal column, and synapse with the longer postganglionic neurons.
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3172 Words | 13 PagesEach of these lobes has different functions from each other. On the other hand, the neurotransmitters are the information carriers, they carry electrochemical signals to and from the brain throughout the entire body in human beings. Then, we have the nervous system which can actually be divided into two parts, the central nervous system (CNS) and the peripheral nervous system (PNS) where the brain and spinal cord are parts of the CNS. The PNS can still be divided into two specific parts, the somatic nervous system (SNS) and the autonomic nervous system (ANS). While the SNS directs the movements of the skeletal muscles, the ANS regulates involuntary processes such as the heart beating, breathing, blood pressure, and blood sugar level.
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