How Does A Neuron Work?

882 Words Sep 21st, 2014 4 Pages
Please compose an essay (one page) that answers the following questions: 1) How does a neuron work? 2) Why does it matter that I know how a neuron works in a course about Psychology?, and 3) What role do neurotransmitters play in Psychology? Here are some web sites that may additionally help you with this assignment
Our human brains have about 100 billion neurons. These neurons react to physical and chemical changes in their surroundings. These cells specialize in sending and receiving neural messages. These neurons make connection with other neurons and send signals all over our bodies. Typically every neuron has a cell body, dendrites and an axon. Neuron’s body cell is like many other cells in body comprising of cytoplasm, nucleus, mitochondria, lysosomes, Golgi apparatus and many microtubules. These organelles enable to cell to perform its function. The axon portion of the neuron is responsible for carrying information to other neurons. The dendrite portion of the neuron is responsible for receiving the signals from the other neurons. Although neuron may have many dendrites, they typically have only one axon. All neurons are electrically excitable, maintaining voltage gradients across their membranes by means of metabolically driven ion pumps, which combine with ion channels embedded in the membrane to generate intracellular-versus-extracellular concentration differences of ions such as sodium, potassium, chloride, and calcium. Changes in the cross-membrane voltage can…

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