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Word Count: 2,187
Parkinsons Disease The human brain functions as the control center for the entire body In short the brain not only controls the body but also the mind and the emotions The brain is an extraordinarily complicated and intricate structure the work of the brain comprises millions of complex electrical chemical actions and reactions taking place every second Liberman 28 This complicated brain determines a persons physical mental and emotional makeup if anything goes wrong with any part of the brain a physical or mental symptom will occur In the early 19th century James Parkinson composed an essay that identified and classified Parkinsons Disease Liberman 28 During WWI a man by the name of von Tretiakoff claimed that the substantia nigra a tiny patch of darkly colored cells was the culprit in this movement disorder Liberman 28 Neither Tretiakoff nor anyone knew or understood why the substantia nigra caused Parkinsons Disease in 1915 but this was a step forward The brain sends its message by way of electrical impulses The brain and the nervous system send messages throughout the body to carry out all the necessary functions Actually The basic unit of your entire nervous system is the neuron a tiny cell less than 1100 of an inch in diameter Your brain and nervous system consist of millions of neurons dispersed throughout the body Liberman 29 Several types of neurons exist to control the different functions of the body The chemicals that allow these neurons to transmit messages across the synapses play a critical role in all human functions Thus the synaptic transmission is the event behind al l the doings of the nervous system Liberman 32 Problems in the substantia nigra interfere with synaptic transmission Liberman 32 It was not until the 1950s that Arvid Carsson and some Swedish researchers discovered large amounts of the neurotransmitter called dopamine Dopamine they discovered was produced in the darkly pigmented cells of the substantia nigra
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