Neurons Essay

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Steven Jerome Alves Professor Denese Crango, MA Introduction to Psychology September 15, 2011 Neurons are the basic building block of the nervous system. All the cells that make up the nervous system are an elaborate system of neurons. The nervous system can be divided into two parts: the central nervous system and peripheral nervous system. The central nervous system consist of the brain and spinal cord, while the peripheral nervous system consist of sensory and motor nervous cells. Neurons are similar to other cells in the human body in a number of ways, but there is one key difference between neurons and other cells. Neurons are specialized to transmitting information throughout the body. These highly specialized nerve cells are responsible for communicating information in both chemical and electrical forms. There are also several different types of neurons responsible for different tasks in the human body. Sensory neurons carry information from the sensory receptor cells throughout the body to the brain. Motor neurons transmit information from the brain to the muscles of the body. Inter-neurons are responsible for communicating information between different neurons in the body. Page 1 There are three basic parts of a neuron: Cell BodyNeurons contain the same cellular components as other body of cells. The central part of the cell is the largest part of the neuron and contains the nucleus. Axon- transmit information away from the cell body. They are a long nerve that are wrappedd in jacket of glial cells called oligodendrocytes. Dendrites - typically carry signals toward the cell body. Dendrites are usually more numerous, shorter and more branched than axons. They have many synapses in order to receive signal messages from nearby neurons. Neurons: Nerve ImpulseAxons and dendrites are bundled together into what are called nerves. These

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