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Medicine

Biology Heart Dissection

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The heart ? Consist of 4 chambers ? Function : Pump oxygenated blood to all parts of the body and to remove waste such as carbon dioxide in the cells. External Anatomy External Anatomy L R Right Atrium External Anatomy L R Right Ventricl e External Anatomy L R Left Atrium External Anatomy L R Left Ventricle Internal Anatomy R L Right Atrium Internal Anatomy R L Right Ventricle Internal Anatomy R L Left Atrium Internal Anatomy R L Left Ventricle Direction of blood Deoxygenated blood from the body ? right atrium ? right ventricle The deoxygenated blood ?the lungs where gases exchange occurs. Carbon dioxide is removed and the blood is oxygenated. Oxygenated and nutrient

Gas Exchange

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Topic 6.5 Gas Exchange IB Objective Students will know that the lungs are actively ventilated to ensure that gas exchange can occur passively Distinguish between ventilation, gas exchange and cell respiration Explain the need for a ventilation system I. All Living Things Respire Why living things must respire (breathe): 1. Cellular Respiration ? controlled release of energy in the form of ATP from organic processes in the cell C6H12O6 + O2 ---> 6CO2 + 6H20 + ATP 2. Gas Exchange -- Exchange of gases (Oxygen, Carbon Dioxide) between an organism and it environments 3. Ventilation - process of "changing" or replacing gas (Oxygen, Carbon Dioxide) in a space (ex: lungs) II. Ventilation A. Single celled organisms can easily diffuse gas in and out of a cell

Biology Test Bank

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Test Bank for Campbell ? Reece Biology Eighth Edition WILLIAM BARSTOW, UNIVERSITY OF GEORGIA LOUISE PAQUIN, McDANIEL COLLEGE MICHAEL DINI, TEXAS TECH UNIVERSITY JOHN ZARNETSKE, HOOSICK FALLS CENTRAL SCHOOL JOHN LEPRI, UNIVERSITY OF NORTH CAROLINA, GREENSBORO C.O. PATTERSON, TEXAS A&M UNIVERSITY JEAN DESAIX, UNIVERSITY OF NORTH CAROLINA, CHAPEL HILL San Francisco Boston New York Cape Town Hong Kong London Madrid Mexico City Montreal Munich Paris Singapore Sydney Tokyo Toronto Editor-in-Chief: Beth Wilbur Senior Editorial Manager: Ginnie Simione Jutson Senior Supplements Project Editor: Susan Berge Managing Editor: Michael Early Production Supervisor: Jane Brundage

Vaccines

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http://www.cnn.com/videos/tv/2015/01/30/erin-panel-anti-vaccination-debate.cnn Two doctors debate vaccines-About 5 min long.
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The Black Death

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The Black Death 1347- 1351 The Famine of 1315-1317 By 1300 Europeans were farming almost all the land the could cultivate A population crisis developed Climate changes in Europe produced three years of crop failures between 1315-17 because of excessive rain. As many as 15% of the peasants in some English villages died. One consequence of starvation & poverty was susceptibility to disease. 1347: Plague Reaches Constantinople! The Symptoms Bulbous Septicemic Form: almost 100% mortality rate The Disease Cycle Flea drinks rat blood that carries the bacteria Bacteria multiply in flea?s guy Flea?s guy clogged with bacteria Flea bites human and regurgitates blood into human wound Human is infected! Boccaccio in The Decameron

evolution and cesarean sections

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British Journal of Obstetrics and Gynaecology October 1998, Vol. 105, pp. 1052-1055 HYPOTHESIS Caesarean section: an evolving procedure? Almost 140 years after the publication of the theory of evolution by natural selection?, arguably one of the greatest achievements of science, we persist in failing to appreciate its proper application to the human species. We have a natural tendency to see ourselves as the unchanging pinnacle of creation, the supreme creation of nature, as if evolution were a ladder with Homo supiens at the top. Instead, we should see evolution as a tree, which proceeds by branching and not (usually) by wholesale transfor- mation and replacement?. Each currently extant twig survives, not because it is ideally suited to its environ-

Chapter 4: American Life in the Seventeenth Century, 1607-1692

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A.???The Unhealthy Chesapeake 1.?????Life in the American wilderness was nasty, brutish, and short for the earliest Chesapeake settlers; malaria, dysentery, and typhoid took a cruel toll, cutting ten years off the life expectancy of newcomers (half of people born in early Virginia/Maryland did not survive to twenty) 2.?????The disease-ravaged settlements of the Chesapeake grew only slowly in the seventeenth century, mostly through fresh immigration from England; the majority of immigrants were single men in their late teens and early twenties, and most perished soon after arrival a.?????Surviving males competed for the affections of the extremely scarce women, whom they outnumbered nearly six to one in 1650

AP Environmental science chapter 12 notes food, soil, pest management

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APES ID: Chapter 12 ? Food, Soil, and Pest Management Distinguish between chronic under-nutrition (hunger) and chronic malnutrition. People who cannot grow or buy enough food to support their basic energy needs suffer from chronic under-nutrition or hunger. Chronic malnutrition is caused by protein and key nutrient deficiency. What 3 systems provide most of the world?s food? Distinguish among the following types of agriculture: croplands, rangelands, and oceanic fisheries industrialized agriculture- high input agriculture, using heavy equipment and large amounts of financial capital, fossil fuel, water and commercial fertilizers and pesticides to produce single crops or monocultures.

Why Doctors Uselessly Prescribe Antibiotics for a Common Cold

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? HEALTH & SCIENCE Why Doctors Uselessly Prescribe Antibiotics for a Common Cold Half of all prescriptions are written for respiratory ailments that aren't going to be helped by a drug By?SHANNON BROWNLEE?|?@ShannonBrownlee?|?April 16, 2012?|?23 inShare8 Brownlee's latest book isOvertreated: Why Too Much Medicine is Making Us Sicker and Poorer.

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