process provided multicellular organisms with a mechanism for communication between cells of the body. By the time of the Cambrian explosion‚ systems of neurons that allowed animals to sense and move rapidly had evolved in essentially modern form. Concept 48.1 Nervous systems consist of circuits of neurons and supporting cells Nervous systems show diverse patterns of organization. All animals except sponges have some type of nervous system. What distinguishes nervous systems of different animal
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Introduction A communicable disease is a disease that is transmitted through direct contact with an infected individual or indirectly through a vector. It is also called a contagious disease (Communicable Disease ‚ 2010). Communicable diseases can be spread very easy and they can range anywhere from a cold to anthrax. I will be discussing the communicable disease chlamydia and how it affects the person as well as everything around them. Awareness about communicable disease is going to be the biggest
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Huntington’s Disease Huntington’s disease‚ also known as Huntington’s chorea is a genetic disorder that usually shows up in someone in their thirties and forties‚ destroys the mind and body and leads to insanity and death within ten to twenty years. The disease works by degenerating the ganglia (a pair of nerve clusters deep in the brain that controls movement‚ thought‚ perception‚ and memory) and cortex by using energy incorrectly. The brain will starve the neurons (brain cells)‚ and sometimes
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Some say addiction is a disease not a choice‚ what do you think? With addiction there is no physiological malfunction in the brain. Addiction is a choice; in the moment. It is not a disease like cancer or diabetes. Addiction is not a disease that comes unexpected‚ it is what you choose to do‚ it is a choice. Addiction is chosen not by the brain does it come unexpectedly. “In a true disease‚ some part of the body is in a state of abnormal physiological functioning‚ and this causes the undesirable
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cells are failing. Many people confuse Alzheimer’s disease with dementia. Dementia is a set of symptoms that include problem solving‚ reasoning skills and memory loss while Alzheimer’s disease is a progressive disorder that is usually characterized by considerable dysfunctions in cognition‚ functionality‚ and behavior (Sabbagh et al.‚ 2011). Researchers have discovered changes that take place in the brains of those who have Alzheimer’s disease that may cause the memory loss and decline in other
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Alzheimer’s Disease Alzheimer’s Disease is a progressive neurological disease; it often attacks the brain tissues causing memory loss of one’s identity and regular behaviors. Statistics indicates that the rate of predicted people to get Alzheimer’s will increase briskly as time goes on. There are currently no cures for such disastrous disease‚ but there are currently approved treatments available that can help people within the early stages of Alzheimer’s. Once the disease is too far along
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Pathophysiology J. Dobrzyn May 31‚ 2013 Hodgkin ’s Disease In 1832 Thomas Hodgkin described a progressively fatal condition characterized by enormous lymph node swelling that he believed to be one disease. Characteristic cells involved in this disease were identified microscopically by Sternberg and Reed in 1898 and 1902‚ respectively. The identification of these cells‚ now known as Reed-Sternberg cells‚ allowed for the initial classification of Hodgkin ’s disease. In the past two decades advances in histology
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There is a constant dispute amongst the medical and psychological community as to whether alcoholism is‚ in fact‚ a disease or just a state of mind. Many of the researchers have classified alcoholism as a disease (Peele 1). Dictionary.com has defined "disease" broadly as an "involuntary choice made by the individual" (5 entries 1). This definition does not comply with alcoholics because they can‚ like any other human being‚ determine that drinking has many unwanted consequences behind it. But an
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Broad Subject : Disease Limited Subject : Uncommon Disease (1st Stage) Limited Subject : Alzheimer’s (2nd Stage) FORMULATED QUESTIONS: 1. What is Alzheimer’s Disease ? •Alzheimer’s Disease is an organic brain disorder characterized by a progressive loss of mental skills and deterioration of the personality. 2. Who described Alzheimer’s disease? •Dr. Alois Alzheimer‚ a German Physician described A.D. in 1906. 3. In what age
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Description Huntington disease is a hereditary disease that causes the degeneration of nerve cells in the brain. Huntington disease‚ or hereditary chorea‚ has an extensive impact on a person ’s functional abilities and usually results in movement‚ perceptive and psychiatric disorders (Walker‚ 2007). It is named after the American physician George Huntington‚ who provided one of the first descriptions of the disease in 1872 (Huntington‚ 1872). The disease causes nerve cells in the brain to die which
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