Arteries carry blood away form the heart the extremities and organs. They have typical three layer blood vessel wall structure with a thick tunica media. The walls of arteries are highly compliant due to the elastic fibres present. The wall thickness of the arteries varies in based on the proximity to the heart. The elasticity of arteries allows pressure absorption from the left ventricle of the heart as it pumps blood into the arteries. There are two significant types of arteries‚ elastic and muscular
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Peripheral Artery Disease and Risks The common cause of peripheral artery disease (PAD) is atherosclerosis. Less common causes of peripheral artery disease may be blood vessel inflammation‚ injury to your limbs‚ unusual anatomy of your ligaments or muscles‚ or radiation exposure (Mayo Clinic‚ 2016). The risk factors for PAD are the same as those for atherosclerotic disease; they are smoking‚ hypertension‚ diabetes‚ increased levels of low-density lipoprotein (LDL)‚ decreased levels of high-density
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Carotid Artery Disease and Stroke Oxygenated blood is carried from the heart to the face and brain by the carotid arteries one on each side of the neck. The carotid arteries (common) bifurcate and become the internal carotid artery (ICA) and the external carotid artery (ECA). Blood supply to the brain is mainly through the internal carotid artery and the vertebral arteries (1). Blood flow to the brain is affected by carotid artery disease. Carotid artery disease is the narrowing (stenosis) or
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CROSS-SECTIONAL VIEWS OF AN ARTERY AND OF A VEIN ARE SHOWN HERE. IDENTIFY EACH; ON THE LINES TO THE SIDES‚ NOTE THE STRUCTURAL DETAILS THAT ENABLED YOU TO MAKE THESE IDENTIFICATIONS: STRUCTURAL DETAILS: ARTERY: ROUND AND THICK VEIN: THIN AND SQUIGGLY 2 CHARACTERISTICS OF TUNICA INTIMA INNERMOST TUNIC‚ THIN TUNIC OF CAPILLARIES 3 CHARACTERISTICS OF TUNICA MEDIA ESPECIALLY THICK IN ELASTIC ARTERIES‚ CONTAINS SMOOTH MUSCLE AND ELASTIN 4 CHARACTERISTICS OF TUNICA EXTERNA MOST SUPERFICIAL
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Capillary From Wikipedia‚ the free encyclopedia Jump to: navigation‚ search For other uses‚ see Capillary (disambiguation). [pic] [pic] Blood flows from the heart to arteries‚ which branch and narrow into arterioles‚ and then narrow further still into capillaries. After the tissue has been perfused‚ capillaries branch and widen to become venules and then widen more and connect to become veins‚ which return blood to the heart. Capillaries (pronounced /ˈkæpəˌlɛri/) are the smallest of a body
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of Coronary Artery Disease Atherosclerosis is a type of arteriosclerosis caused by a build-up of plaque in the inner lining of an artery. (Arteriosclerosis is a general term for thickening or hardening of the arteries.) (Porth 2005) Plaque is made up of deposits of fatty substances‚ cholesterol‚ cellular waste products‚ calcium‚ and fibrin‚ and can develop in medium or large arteries. The artery wall becomes thickened and looses its elasticity. (Fraser 2000) The wall of an artery is composed
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CORONARY ARTERY BYPASS GRAFT Coronary artery bypass grafting (CABG) is a type of surgery that improves blood flow to the heart. Surgeons use CABG to treat people who have severe coronary heart disease (CHD). CHD is a disease in which a waxy substance called plaque builds up inside the coronary arteries. These arteries supply oxygen-rich blood to your heart. Over time‚ plaque can harden or rupture (break open). Hardened plaque narrows the coronary arteries and reduces the flow of oxygen-rich blood
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blood vessels and structure There are three types of blood vessel‚ Arteries ‚ veins and capillaries. Each of them have different functions involved in carrying blood around the body . Arteries are blood vessels that transport blood away from the heart‚ veins are blood vessels that transport blood to the heart and Capillaries are extremely small vessels located within the tissues of the body that transport blood from the arteries to the veins. they must be constructed for carrying fluids over long
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streak‚ which is due to an accumulation of lipid-laden foam cells in the intimal layer of the artery. With time‚ the fatty streak evolves into a fibrous plaque‚ the hallmark of established atherosclerosis. Ultimately the lesion may evolve to contain large amounts of lipid; if it becomes unstable‚ denudation of overlying endothelium‚ or plaque rupture‚ may result in thrombotic occlusion of the overlying artery. http://www.nhs.uk/Conditions/Atherosclerosis/Pages/Causes.aspx Obesity Being overweight
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Running Header: Peripheral Arterial Disease Peripheral Arterial Disease April 22‚ 2010 ME 1352 Abstract Peripheral Arterial Disease is a common secondary disease that follows Atherosclerosis. Once so much plaque builds up in the arteries‚ they become block the blood flow. P.A.D. usually affects the lower extremities and can cause intermittent claudication and‚ if severe enough‚ gangrene. Many people live with atherosclerosis and P.A.D. and show no symptoms. There are numerous prevention
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