Hanna Rich 2/25/14 Chemistry 1110 Chemistry in the News Wireless Cardiac Defibrillator The heart is an incredible muscle. Unlike the brain where a person can continue to be “alive” without any electrical activity‚ without a heartbeat‚ a person cannot live. The average person doesn’t ever think about how or why their hearts lub dub every minute of every day until they die. For someone whose heart doesn’t beat properly‚ the lub dub is a frequent worry. Brandon England is one of those people
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thought to include fear‚ anger‚ sadness‚ happiness‚ surprise‚ disgust‚ and contempt. b. Secondary emotions - Emotions that are specific to certain cultures or those that usually develp with cognitive maturity. c. Circumplex model of emotions d. Adaptive qualities of positive and negative emotions Negative emotions -Evolved for survival purposes to detect and avoid threats. Ex: fear‚ disgust Moral and social functions Ex: embarrassment‚ guilt i. Broaden-and-build model of positive emotions
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is an adaptive response because it enables the individual to cope. It becomes maladaptive if the stressor persists Stressor ‡ a physiological or psychological stimulus that threatens an individual’s well being. It could lead to a stress response. THE BODY’S RESPONSE TO STRESS The General Adaptation Syndrome (GAS) – model outlined by Seyle (1936) Observed that all animals produce the same sequence of responses to all stressors: cold‚ pain‚ and physical trauma. This response is adaptive because
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something bad that kills you. Most people don’t even know what it means. For starters‚ HIV stands for Human Immunodeficiency Virus and‚ AIDS stands for Acquired Immune Deficiency Syndrome. So what’s the difference between the two. HIV is the virus and AIDS is the syndrome acquired from the infection of the virus. HIV specifically attacks the immune system. "Going after the CD4+ helper T cells that help maintain effective immunity against the virus itself" (Anderson‚ 2005). Some HIV- infected individuals
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Predator-Prey Relationships: Coevolution versus Escalation Species on Earth interact in many different ways (Abrams‚ 2000). These interactions have evolved over millions of years to become an incredibly complex web of inter-species relationships and understanding these relationships enables science to model future species interactions (Abrams‚ 2000). From symbiosis to parasitism‚ Earth seems to have every type of relationship imaginable (Dietl and Kelley‚ 2002). One of the most intriguing
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1. What is metabolic absorption? “All the cells take in and use nutrients and other substances from their surroundings. Cells of the intestine and the kidney are specialized to carry out absorption. Cells of the kidney tubules reabsorb fluids and synthesize proteins. Intestinal epithelial cells reabsorb fluids and synthesize protein enzymes” (McCance & Huether‚ pg. 2). 2. What uses oxygen to remove hydrogen atoms in an oxidative reaction? “Peroxisomes are so named because they usually contain
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behavioral effects does MDMA produce? Provide 2 examples of short-term & 2 examples of long-term behavioral effects on behavior. - Behavioral effects of MDMA: severe dehydration‚ jaw clenching‚ eye twitching‚ nausea‚ blurred vision‚ suppression of immune system‚ disturbed sleep patterns‚ and cognitive impairment - Short term effects: nausea‚ jaw clenching‚ disturbed sleep patterns‚ & changes in cognition‚ emotion‚ & motor function - Long term effects: (chronic use can cause serotonin to become
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Hepatology. 1998;27:1435–40. 8. Golden-Mason L‚ Rosen HR. Natural killer cells: primary target for hepatitis C virus immune evasion strategies? Liver Transpl. 2006;12:363–72. 9. Diepolder HM. New insights into the immunopathogenesis of chronic hepatitis C. Antiviral Res. 2009;82:103–9. 10. Cramp ME‚ Carucci P‚ Rossol S‚ Chokshi S‚ Maertens G‚ Williams R‚ et al. Hepatitis C virus (HCV) specific immune responses in anti-HCV positive patients without hepatitis C viraemia. Gut. 1999;44:424–9. 11. Tsai SL‚ Liaw
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lymphocytes from the bone marrow and the lymphoid organs. The effector functions of antibodies are determined by the constant regions of the heavy chain. There are five different isotypes known in mammals to perform different roles and to direct a specific immune response for the antigen encountered. The binding of antigens to the variable regions will trigger the effector functions. Antibodies are only able to perform their functions upon entering the blood and the peripheral sites of infection. They prevent
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normal haematocrit? what is erythropoiesis?why would the level of leukocytes be higher in an individual who has been infected with a parasitic disease. In regions where malaria is endemic‚ some people build up immune resistance to the malaria pathogen. Which WBCs are responsible for the immune response against pathogens? How do they function? A 13 year old is studying blood in school‚ and has asked some questions that haven’t been answered in class. I will answer these questions In a way that a
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