"When the heart is externally stimulated just after the start of the contraction cycle why does this have no effect on heart rate" Essays and Research Papers

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    Structure of Heart

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    SURFACE VIEW OF HEART Position‚ Shape and Size of the Heart: The human heart is located between the lungs in the thoracic cavity (i.e. it is not situated on the left side of the chest). The heart is a hollow‚ fibro-muscular organ and is somewhat conical in shape. It is about the size of one’s fist‚ measures about 12 cm in length and 9 cm in breadth. Its weight is about 300 g in an adult. The heart is enclosed in pericardium (a double- layered membranous sac). It protects the heart from mechanical

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    Heart Disease

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    vaccines for various diseases and disorders are being developed constantly‚ and yet‚ coronary heart disease remains the number one killer in the world.<br><br>The media today concentrates intensely on drug and alcohol abuse‚ homicides‚ AIDS and so on. What a lot of people are not realizing is that coronary heart disease actually accounts for about 80% of all sudden deaths. In fact‚ the number of deaths from heart disease approximately equals to the number of deaths from cancer‚ accidents‚ chronic lung

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    The Human Heart

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    The heart is one of the most important organs in your body. So what does it do? It’s function is to pump blood to all the other organs. But the heart can not function alone‚ it has other organs and blood vessels helping it. The human heart is a pear shaped and about the size of a human fist. It is made of muscle and there are three different layers. The outer layer is called the epicardium. The middle layer is called the myocardium which is made of muscles that contract. The inner layer is called

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    The most important muscle‚ the heart‚ is responsible for allowing us to continue experiencing the simple‚ yet beautiful things in life. For example‚ waking up or enjoying a beautiful sunset‚ other things like swimming and running. To maintain a healthy heart health care givers properly examine this muscle‚ one component that allows this examination is the cardiac cycle. The cardiac cycle involves a sequence of events affiliated with the flow of blood within the heart during a complete heartbeat‚

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    heart of darkness

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    Notes on the title of Joseph Conrad’s Heart of Darkness It makes good sense to suggest that a title is conventionally chosen to represent the main idea of a novella‚ to correlate with a theme or motif. Heart of Darkness is no exception. Published in 1902‚ the novella illustrates the mentality and the culture of the white people at that time. They were confident in themselves and in their superiority as a breed. Mrs. Kurtz is the most representative character in this regard. The title of the novella

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    Heart of Darkness

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    Joseph Conrad ’s Heart of Darkness does not explicitly deal with a struggle between war and peace: the conflict is a psychological‚ moral one; however‚ the text ’s implications that society is a thin veil over our innate savagery‚ the darkness at the roots of Western civilization‚ reveals disturbing truths about the peaceful‚ orderly lives we take for granted. The key to understanding Conrad ’s novella lies in ascertaining the metaphorical significance of the "heart of darkness‚" a search which may

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    Heart Attack

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    infarction based on pathology: Transmural: associated with atherosclerosis involving a major coronary artery. It can be subclassified into anterior‚ posterior‚ inferior‚ lateral or septal. Transmural infarcts extend through the whole thickness of the heart muscle and are usually a result of complete occlusion of the area’s blood supply.[13] In addition‚ on ECG‚ ST elevation and Q waves are seen. Subendocardial: involving a small area in the subendocardial wall of the left ventricle‚ ventricular septum

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    you are aware‚ today’s generation is moving on a fast track; racing against time and a highly competitive environment around. Every one is trying to reach to the top in studies‚ examinations or in securing the best job‚ or pursuing the most sought after profession. Who selects a specific career for our children? What is the basis? Is it the parent’s wish or the child’s desire? How do we judge our children’s’ capabilities‚ liking/aptitude towards a particular subject/career? Who takes the final decision;

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    Heart of Darkness

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    To what extent does cultural context influence the nature of adaptation from text to big screen? To an extent‚ cultural context plays an integral role in the process of adaptation from text to film. It greatly influences our perception of the film‚ as the audience can relate their surroundings to the movie. In the case of Apocalypse Now‚ the prominent issue was the cold war. However‚ besides cultural context‚ other factors also influence the nature of adaptation. It’s incontrovertible

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    Heart of Darkness

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    The Visions of Light Vs Darkness When Joseph Conrad composed Heart of Darkness he created a literary masterpiece which embodied the essence of light contrasting with darkness. Throughout the novel Conrad constantly utilizes the images of light and dark and uses them to mold a vision‚ which the reader is then able to use to decipher the literal and metaphorical meanings of the novel. As Conrad said‚ " my task which I am trying to achieve is‚ by the power of the written word to make you hear‚ to

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