changes occur in the aorta‚ arteries and arterioles. The age related changes that occur in muscular arteries are usually known as arteriosclerosis. It involves alterations of the smooth muscle hypertrophy and intimal fibrosis further reducing the diameter of the vessel. Atherosclerosis is the most common arterial abnormality known as arteriosclerosis which is defined as the stiffening or hardening of the artery walls. However‚ atherosclerosis refers to the hardening of the arteries caused by the accumulation
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hollow muscular pump that stands at the operational center of the system that pumps liquid blood throughout the body through three types of flexible tubes‚ the blood vessels (Fig. 4.1). The arteries channel blood from the heart to all parts of the body needing service. Once there‚ the blood passes through narrow arteries and enters the capillaries‚ which are the narrowest blood vessels. Many substances and some blood cells pass into and out of the blood by moving through the thin porous capillary walls
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puRpose Please explain the purpose of this lab. Include in your explanation the major concepts you learned and any safety concerns associated with the lab. Learning the structural and functional differences among arteries‚ veins‚ and capillaries. Identify the major arteries arising from the aorta through observation and dissection of a preserved specimen. Identify the major veins draining into the superior and inferior vena cava through observation and dissection of a preserved specimen wear
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substitute to heart surgery‚ it has dependably been shown to diminution indications due to coronary artery disease and decrease cardiac ischemia. Procedure: 1. An introducer pointer is entrenched into the femoral artery in
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(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‚ which have such thin walls‚ that oxygen‚ nutrients‚ minerals‚ and other substances pass through to surrounding cells and tissues. Waste substances flow from the
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disease affects the coronary arteries‚ which supply the heart muscle itself with the glucose and oxygen that it requires for respiration. • Atheroma Atheroma is a fatty deposit that forms within the wall of an artery. It begins as fatty streaks that are accumulations of white blood cells that have taken up low density lipoproteins (LDLs). The streaks can enlarge to form an irregular patch‚ or atheromatous plaque. Atheromatous plaques most commonly occur in larger arteries and are made up of deposits
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(areolar and fibrous CT) Picture Generalized Structure of Arteries‚ Veins and Capillaries Types of Blood Vessels Elastic arteries: Contain much elastic tissue Larger arteries closer to the heart Must expand when heart pumps much blood into them and then passively recoil after blood passes by. Thus‚ must withstand pressure fluctuations Muscular arteries: Have less elastic tissue‚ but substantial muscle tissue Smaller arteries farther from heart Exposed to less extreme pressure fluctuations
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especially under ultrasound guidance. Central venous cannulation is associated with various complications‚ some being potentially dangerous like inadvertent arterial puncture. We hereby report a case of inadvertent cannulation of left subclavian artery during ultrasound guided placement of central venous catheter in left internal jugular vein(IJV). Case Report A 46-year-old female with no co-morbidities presented with cough and breathlessness on day 2 of second cycle of chemotherapy. She had undergone
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Riya Ragbarsingh General Biology Dr. Samira Ziaei-Halaby May 8‚ 2012 Myocardial Infarction Myocardial Infarction also known as “heart attack”‚ is when a damaged muscle or artery is blocked preventing the blood to flow through. Because of fast food places such as McDonalds‚ Burger King‚ Wendy’s and etc… Most Americans prefer eating outside than having a healthy home cooked meal. Many people do not realize the amount of fatty and oily substances that are in the meals that are being cooked
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and almost half a million die‚ according to the American Heart Association. A heart attack often is the first symptom of coronary artery disease. The blockage usually is caused by atherosclerosis‚ the build-up of plaque in the artery walls‚ and/or by a blood clot in a coronary artery. A slow buildup of this plaque may almost block one of your coronary arteries. The cause of the heart is not always known. Heart attacks may occur when you are resting or asleep‚ after a sudden increase in physical
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