STUDY GUIDE: THE BRAIN 1. Approximately how many neurons are there in the brain? about 100 billion 2. What is a neuron? It is a nerve cell that sends and receives electrical signals over long distances within the body 2b. be able to label its parts. Parts of a neuron. A neuron has three basic parts‚ the cell body‚ the axon‚ and the dendrites. A thin nerve membrane surrounds the entire cell 3. How fast do neurons travel? Neurons
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know that an estimated 13‚000 people died from brain tumors in the United States in 2009? As a matter of fact‚ more 200‚000 US cases of brain tumors are reported per year according to Brain Tumor Society. Brain tumor is abnormal growth of tissue in the brain and comes in two forms‚ benign and malignant. A benign brain tumor is made up of non-cancerous cells and does not spread beyond the part of the brain where it initially formed. A malignant brain tumor‚ on the other hand‚ is composed of cancer
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DRUGS A drug is a chemical substance taken into the body that modifies or affects chemical reactions in the body. Generally‚ drugs are developed for medical use. Without drugs‚ people would live much shorter lives or suffer greater pain. All drugs are dangerous when misused. ANTIBIOTICS [pic] What are Antibiotics? a chemical substance ‚ produced by a microorganism (bacterium or fungus) which will inhibit the growth or replication of other microorganisms. • Effective
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Summary This paper summarizes the activity of the drug cartels that is responsible for terrorizing the citizens inside and outside Mexico. They are responsible for ruining young people’s lives by making them addicted to the drugs. These drug cartels are in Mexico and send drugs illegally throughout the world and their goal to make a lot of money by making more people to purchase their drugs. These organizations work like Mafia that no power could stop them from doing so. They have threatened people
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Keisha Ellis Drug Abuse & Drug Addiction SOC 203 Social Problems Instructor Ely May 11‚ 2015 Numerous individuals do not comprehend why individuals get to be dependent on drugs or how drugs can change the mind to cultivate enthusiastic drug abuse. They erroneously view drug misuse and dependence as entirely a social issue and may describe the individuals who take drugs as ethically powerless (Alving‚ Matyas‚ Torres‚ Jalah‚ & Beck‚ 2014). One extremely regular belief is that drugs abusers
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Brain implant that works better than medication brings hope to thousands of Parkinson ’s sufferers Deep brain stimulation using an electrical implant works better than drugs alone in earlier stages of disease Quality of life can improve by up to 26 per cent after op Speech and walking improved by average of 30 per cent A new highly accurate form of brain surgery could bring hope to thousands of Parkinson ’s sufferers. A two-year trial shows deep brain stimulation using an electrical
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and other drugs) which cross the blood-brain barrier once ingested‚ temporarily altering the chemical milieu of the brain. * Addiction is a primary‚ chronic‚ neurobiological disease‚ with genetic‚ psychosocial‚ and environmental factors influencing its development and manifestations. It is characterized by behaviours that include one or more of the following: impaired control over drug use‚ compulsive use‚ continued use despite harm‚ and craving. What is Drug addiction? * Drug addiction
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Addiction: A Disease of the Brain Chad Steelmon Dual Enrollment English 101 Mrs. Munger December 14‚ 2012 Abstract Through years past and years presently‚ addictions have grown and changed in style and substance. The leaders in substance addictions transpose every year with the usual frontrunners of alcohol and tobacco. Addictions are truly a disease that is extremely hard to overcome‚ but it can be done. With endurance and acceptability to setbacks‚ an addiction can become
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What is drug addiction? -Drug addiction is a complex brain disease. It is characterized by compulsive‚ at times uncontrollable‚ drug craving‚ seeking‚ and use that persist even in the face of extremely negative consequences. -Drug seeking becomes compulsive‚ in large part as a result of the effects of prolonged drug use on brain functioning and‚ thus‚ on behavior. For many people‚ drug addiction becomes chronic‚ with relapses possible even after long periods of abstinence. Drug addiction is a chronic
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Swenda SOS-304-OL009 WA 2 1b. List and describe briefly the major structures of the brain‚ as presented in your textbook‚ including the function of those elements that are most related to psychoactive drug reaction. The first layer of the brain is the cortex which covers the top and sides of the brain. This area controls reasoning and language‚ and this area will be less active when under sedative drugs. The basal ganglia are located underneath the cortex and it is made up of by the striatum
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