Nervous System 8 Pages 1979 Words

The nervous system is the most complicated part of the body because it controls our thoughts, emotions, and physical functions. It is an important element of science because it can bring new discoveries to treatments and diseases. Studies of the nervous system help to reduce cardiac disease, stroke, and mortality from accidents. The nervous system is a network of neurons (neurons) that send information to the brain for analysis. Neurons live inside and outside the central nervous system. Understanding the workings of neurons is important for understanding the nervous system. Neurons have two important structures called dendrites and axons, also known as nerve fibers. Dendrites are like tentacles emanating from cells, axons are long extended parts of cells. Dendrites receive signals from other neurons, and axons send pulses to other neurons. An axon can extend to a length of 1 meter or more. There are hundreds of dendrites in the average size of neurons, so you can receive thousands of signals simultaneously from other neurons. Neurons send impulses by connecting axons to dendrites of other neurons. A synapse is a gap between an axon and an adjacent neuron, and data is passed from one neuron to another. Neurons are negatively charged, soaked in liquids containing positively charged potassium and sodium ions. The membranes of neurons retain negatively charged protein molecules. Neurons have pores called ion channels to allow sodium ions to enter the membrane, but prevent protein molecules from escaping (ion channels primarily restrict sodium ions, so potassium ions block the membrane You can freely pass). When a neuron is stimulated (not static) it pores open to attract negatively charged protein molecules and sodium ions flow in, which makes the cells positively charged. As a result, potential energy is released and neurons are sent.

Under the microscope, neurons and tissues in the central nervous system and the peripheral nervous system differ. The central nervous system is divided into white and gray substances. This can be observed with the naked eye of the brain tissue. White matter consists of axons and oligodendrocytes, which are composed of neurons and unmyelinated cells. Both tissues contain many glial cells (more white matter is contained), but they are called supporting cells of the central nervous system. While other microglia are special types of macrophages, the different forms of glial cells have different functions, some of which act as a scaffold for neuronal cell elevation during neurogenesis. It forms, participates in the immune system of the brain, and removes various metabolites from brain tissue.

The nervous system is an organ system that deals with body communication. There are four types of nerve cells in the nervous system: sensory nerves, motor nerves, autonomic nerves, interneurons (neurons are merely strange words for nerve cells). You can divide all the nerves of your body into two parts: the central nervous system and the peripheral nervous system. There are two organs in the central nervous system, the brain and the spinal cord. It has four types of neurons, the only place to find neurons. The central nervous system is well isolated from the outside world. It has not even been exposed to blood. It brainwashes and takes nutrients from the cerebrospinal fluid which is a washing solution that can be spinalized.

Structurally, there are two elements, the central nervous system and the peripheral nervous system. According to the National Institutes of Health, the central nervous system consists of the brain, spinal cord, and nerve. The peripheral nervous system consists of sensory neurons, ganglia (neuron clusters) and nerves connected to one another and to the central nervous system. Functionally, the nervous system has two main subdivisions: somatic cells or voluntary components; and autonomous or involuntary components. According to Merck 's manual, the autonomic nervous system can adjust specific body processes such as blood pressure and respiratory rate without requiring conscious effort. Somatic cell lines are composed of brain and spinal cord, nerves connecting sensory receptors of muscle and skin.