Chapter 48: Nervous Systems Command and Control Center * The human brain contains an estimated 100 billion nerve cells‚ or neurons * Each neuron my communicate with thousands of other neurons * Functional magnetic resonance imaging (fMRI) is a technology that can reconstruct a 3-D map of brain activity * The results of brain imaging and other research methods reveal that groups of neurons function in specialized circuits dedicated to different tasks 48.1: Nervous Systems consist of
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Autism: Past‚ Present‚ Future‚ Speculative Autism is all over the news right now‚ a very different situation than 18 years ago when we were looking for the cause of our son’s developmental delay. Much of the media coverage‚ however‚ focusses on the sound-bite and tear-jerking opportunities that any problems with young children can provide. This is fine for the television crews‚ but it really does not inform the public‚ or help parents who are wondering whether their child could be autistic‚ or
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Introduction Our bodies react appropriately to changes that occur in the environment during our day-to-day activities. When responding‚ an external stimulus has to be detected by one or more neurons. These then send this sensory information to the nervous system where processing occurs. If a motor signal is started‚ it usually involves a number of action potentials‚ which lead to muscle contraction and movement of other parts of the body in reaction to that external stimulus. For example‚ loud sounds
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Chapter 2: Neurons and Glia 1. Introduction * Although there are many neurons in the human brain (about 100 billion)‚ glia outnumbers neurons by tenfold. 1:10 ratio. * Neurons are the most important cells for the unique functions of the brain. * Neurons sense changes in the environment‚ communicate these changes to other neurons‚ and command the body’s responses to these situations. * Glia‚ or glial cells‚ are thought to contribute to brain function mainly by insulating‚
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Chronic Consumption of Ethanol Alcohol and Neurological Dysfunction Ethanol Alcohol‚ commonly known as Alcohol is the primary mood altering drug used in the United States of America. When alcohol is consumed it is absorbed unaltered by the stomach and the small intestines. Then the ethanol molecules are distributed evenly to all of the tissues and fluids of the body. The alcohol present in the bloodstream is metabolized by the liver through three pathways. The major pathway involves an enzyme
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B1a Fitness and health 1. You should be thinking about the differences between health and fitness‚ concentrating on the causes and prevention of heart disease‚ which is the most common cause of death in the UK. 2. Have ideas on encouraging a healthy lifestyle e.g. ways to reduce the risk of heart disease and high blood pressure e.g. give up smoking‚ avoid eating high levels of salt and avoid eating high levels of saturated fat. 3. Know that the risk of developing heart disease can be increased
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Community College of Philadelphia Department of Biology Biology 109: Anatomy and Physiology I Course Syllabus and Laboratory Schedule CCP Main Campus: Department of Biology Office‚ Room W2-5A Department Head: Dr. Linda Powell Office Hours: 9:00 AM - 5:00 PM Monday – Friday (Fall & Spring) 9:00 AM – 5:00 PM Monday – Thursday (Summer I & II) Phone (215) 751-8432 Fax (215) 751-8937 E-mail: lpowell@ccp.edu Student’s Name _____________________________________ Class Section _______________________________________
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some beneficial effects on your body. Caffeine Benefits Caffeine is a stimulant that is found in soft drinks. It large amounts can have detrimental effects on your health but it also has numerous benefits. Caffeine stimulates your central nervous system‚ helps breakdown fatty acids in your liver‚ boost your mood and alleviate headaches. People who regularly ingest caffeine are less likely to develop Parkinson’s disease‚ colon cancer‚ gallstones‚ and cirrhosis of the liver. Sponsored Links
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Hemiparesis is a condition that is commonly caused by either stroke or cerebral palsy‚ although it can also be associated with brain tumours‚ multiple sclerosis‚ and other diseases of the central nervous system. The word ‘hemi’ means half‚ while the ‘paresis’‚ means weakness. An estimation of over 80% of people who experiences a stroke obtains difficulties concerning movement of one side of the body (Weiss‚ 2010). Patients suffering from hemiparesis often have difficulties maintaining their balance
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M1 Nature is the genetic and biological influences on an individual and their development; it is based on genes and what is inherited from them. Nurture is the social‚ economic and environmental influences on an individual and their development; it based on personality and how behaviour is learnt. Determinism is the belief that you future is fixed and influenced purely naturally by what is genetically inherited or that your future is unpredictable and can change over time depending on choices made
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