causes loss of function in the arms and legs. Lou Gehrig’s disease, also known as ALS, is caused by motor neurons in the spinal cord or brain dying. The neurons in the spinal cord normally send electronic messages from the brain down to the muscles. Doing this stimulates the muscles in the arms, legs, and the head. When ALS causes the
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People can control what they perceive based on their biological limits and how willing they are to push themselves to get to know themselves better. The key to success here is the last part, pushing themselves and extending their will so that they can become a new person…almost. A lot of people tend to give up, when they become blind, or lose some part of their sensory cortex either congenitally or over time. The truth of the matter is that they don’t have to, due to the brain's plasticity, when
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In 1869, Doctor George Beard diagnosed the first case of “neurasthenia,” translated from Greek as the lack of nervous energy (Schuster, Lecture). Following this initial diagnosis, neurasthenia became a catch all for any symptom that didn’t have a specific medical diagnosis. This included things such as insomnia, anxiety, or even the lack of ability to give birth. The idea behind the diagnosis is that the body was not working correctly because of stress due to the rapid urbanization going on during
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The leech nervous system consists of a brain connected to a ventral nerve cord. This nerve cord is further made up of segmental ganglia (Titlow, 2013). Within each ganglia are many other types of cells that can be distinguished by their general properties and by the electrical signals that they initiate (Titlow,2013). Titlow’s experiment classified some of these types of cells based on their general properties: R-Retzius cells, P- pressure, T- touch, N-nociceptive, AE- annulus erector (2013). In
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disease involves the breaking down or death of nerve cells in the brain, most notably in an area known as the substantia nigra. The substantia nigra, which is a Latin term for “black substance,” is a movement control center found in the midbrain as part of the basal ganglia. The substantia nigra has a high concentration of neurons that produce and release dopamine, a neurotransmitter that relays messages to other parts of the brain to control body movements. PD causes dopamine production to decrease
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minor, sporadic memory loss. These characteristics eventually worsen, impairing cognitive abilities like language skills and decision making. An intense loss of all mental function then occurs and correlates to the decline in breakdown of specific brain neuron connections. All of this compounds, leading to the eventual death of the affected person. AD is the most common
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First, I appreciate your candor and secondly, there is nothing wrong with you! Granted we can chew gum and walk at the same time; however, I have learned that multitasking simply does not exist; it is an illusion, a myth. We task switch or background task, in which one activity consumes our attention while we’re mindlessly performing another; in other words, the concept of divided attention. I admit that I thought I was the Wonder Woman of multitasking; yet, when I reflect back I actually was not
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throughout the body . The nervous system is that system.The nervous system is made from two main parts. The central nervous system, that’s made up of the brain, the brainstem, and spinal cord. The other is the peripheral nervous system, which is the sections of the nerve fibers that extends to the extremities and into other regions of the body. The brain is composed of 2 types of “tissues” known as the gray matter and the white matter. Gray matter is made up of dendrites and axon terminals and fats.
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Introduction Multiple sclerosis (MS) is a disease of the brain and spinal cord (central nervous system). It causes the body's disease-fighting (immune) system to destroy the protective covering (myelin sheath) around nerves in the brain. When this happens, signals from the brain do not get sent properly or may not get sent at all. There are several types of MS: Relapsing-remitting MS. This is the most common type. This causes sudden attacks of symptoms. After an attack, you may recover completely
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Anencephaly occurs when the upper part of the neutral tube dose not close all the way (Facts about Anencephaly). Typically this causes the baby to be born without the front part of the brain and thinking and coordinating parts leaving the rest of the brain to be not cover by bone or skin. The causes for Anencephaly to happen are unknown. For some babies is occurs because of a change in their genes. It could also be caused by things that the mother encounter while pregnant
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