The cardiovascular system‚ also known as the circulatory system‚ is composed of the heart‚ blood vessels‚ and blood. The term cardiovascular refers to the heart (cardio-) and blood vessels (vascular). The term circulatory refers to the circulation of the blood. The heart is a muscular pump and its regular contractions send blood into tough‚ elastic tubes called arteries‚ which branch into smaller vessels and convey oxygen-rich blood through the body. The arteries eventually divide into tiny capillaries
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Open-heart surgery had been one of the largest life saving surgeries performed. The first successful open heart surgery was performed in 1952 by Dr. F John Lewis. He used ice to cool down the heart and slow circulation. The basis of heart surgery involves exposing the heart (open). The sternum must be sawed through to expose the heart. The heart cannot be left pumping during surgery. At first ice was used but now a heart lung machine is used. It involves hooking a tube up to the aorta. Blood goes
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enrobed by a capsule of proliferated smooth muscle cells. Atherosclerosis‚ formerly considered as a bland lipid storage disease‚ actually involves an ongoing inflammatory response that results in a host of complications including ischaemia‚ acute coronary syndromes and stroke. Recent advances in cellular science have established a fundamental role for inflammation in mediating all stages of this disease‚ from initiation through progression‚ and ultimately‚ the thrombotic complications of atherosclerosis
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A&P 2 Cardiovascular system: The Heart Purpose: The purpose is to be able to descirbe the external and internal anatomy of the heart and use of microscoppy dissection. As well as be able to identify the vessels involved in coronry circulation. Safety will include wearing goggles and apron to prevent any splatter. Exercise 1: ( Slide) Questions: A. Where are some unique structral features of cardiac muscle? - presence of irregularly-spaced dark bands between myocytes (intercalated
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arteri/o | Artery | -ary | Pertaining to | ather/o | Plaque‚ fatty substance | atri/o | Atrium | bi | Twice‚ double‚ two | brady | Slow | calc/i | Calcium‚ lime‚ the heel | cardi/o | Heart | clavicul/o | Clavicle‚ collar bone | coronary | Coron/o‚ crown | dys | Bad‚ difficult‚ painful | ech/o | Sound | -ectomy | Surgical removal‚ cutting out‚ excision | electr/o | Electricity‚ electricity | -emia | Blood‚ blood condition | end/o | In‚ within‚ inside | epi | Above‚
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consists of two pairs of chambers - the atria and ventricles‚ which act as separate pumps. The right half of the heart "pumps" venous-rich carbon dioxide blood through the lungs‚ it is - a small circulation. The left half throws oxygenated blood that is passed from the lungs into the systemic circulation. Venous blood from the upper and lower hollow vein enters the right atrium which consist of the “superior vena cava” which is a smaller vein that circulates de-oxygenated blood from the upper half
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MSSW JAYWANT [] Acute coronary syndrome is a term used for any condition brought on by sudden‚ reduced blood flow to the heart. Table of Contents ACUTE CORONARY SYNDROMES IN OLD AGE. DEFINITION Acute coronary syndrome is a term used for any condition brought on by sudden‚ reduced blood flow to the heart. Acute coronary syndrome symptoms may include the type of chest pressure that you feel during a heart attack‚ or pressure in your chest while you’re at rest or doing light
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The Cardiovascular System CHAPTER SUMMARY The importance of the cardiovascular system cannot be overstated. This is one system that students frequently know something about‚ at least from a plumbing viewpoint‚ but they often don’t completely understand the complexity of the system and the magnitude of its tasks. An essential component of presentation of the material is then to outline in detail the role of the cardiovascular system and its significance to all other body systems. This chapter
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20 The Heart PowerPoint® Lecture Presentations prepared by Jason LaPres Lone Star College—North Harris © 2012 Pearson Education‚ Inc. An Introduction to the Cardiovascular System • Learning Outcomes • 20-1 Describe the anatomy of the heart‚ including vascular supply and pericardium structure‚ and trace the flow of blood through the heart‚ identifying the major blood vessels‚ chambers‚ and heart valves. • 20-2 Explain the events of an action potential in cardiac muscle‚ indicate the
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OF MYOCARDIAL INFARCTION Mechanisms of Occlusion Most MIs are caused by a disruption in the vascular endothelium associated with an unstable atherosclerotic plaque that stimulates the formation of an intracoronary thrombus‚ which results in coronary artery blood flow occlusion. If such an occlusion persists long enough (20 to 40 min)‚ irreversible myocardial cell damage and cell death will occur.5 The development of atherosclerotic plaque occurs over a period of years to decades. The initial
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