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Circulatory system.docx - Circulatory system: 1 Objectives:...

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Circulatory system:1Objectives:Explain the boundaries, subdivision, and contents of the mediastinaDiscuss the external and internal features of the heartDescribe the heart coveringsDescribe the heart coveringsDefine the conducting system of the heartExplain the blood supply and venous drainage of the heartName the major arteries of the head and neck and upper limbIdentify the origin and distribution of these arteriesDescribe venous drainage of the head and neck and upper limbName major arteries of the trunk and lower limbIdentify the origin and distribution of the above mentioned arteriesDescribe venous drainage of the trunk and lower limbExplain the portal Venous systemCirculatory system:Distributes O2 and nutrients to all human body cellsPicksup waste materials produced by the cells to be eliminated bo other systems ex.respiratory, urinary systemsIncludes heart and blood vesselsMediastinum:A space boundedoanteriorly by sternum and costal cartilagesolaterally by lungsoposteriorly by bodies of thoracic vertebraeContains heart, its large vessels, and other anatomical structures (ex. esophagus, trachea,thoracic aorta)Divisions:oSuperiorand inferiorpart by a transverse plane passing through the sternal angleanteriorly and the intervertebral disc between vertebrae TIV and TV posteriorlyoThe inferior mediastinumis subdivided into 3 parts1.Middle mediastinumis mainly occupied by the heart and pericardium. Housesthe heart, peridcardium, and main vessels of the heart (ascending aorta,pulmonary trunk, pulmonary veins), right and left phrenic nerves, and mainbronchi.2.Anterior mediastinumis located b.w the sternum and pericardium. Mainlycontains the thymus gland.3.Posterior mediastinumis placed b.w the pericardium and bodies of vertebraeTV to TXII. Holds descending aorta, azygus, and hemiazygus veins, right andleft vagus nerves, thoracic duct, esophagus, sympathetic chain (Trunk), andsplanchnic nerves.oThe superior mediastinumcontains the arch of aorta and its branches, right and leftbrachiocephalic veins, the inferior part of superior vena cava, end of azygus vein,right and left phrenic nerves, right and left vagus nerves, and trachea, esophagus,thymus gland, and thoracic duct
Circulatory system:2Heart:Muscular conical pump located in middle mediastinum~same size as individual’s fist2 parts of circulatory system:1.Pulmonary circulation:a.Right atrium receives deoxygenated blood from the entire body andpasses it to the right ventricle. R ventricle pumps the blood to the lungs.2.Systemic circulation:a.Left atrium receives oxygenated blood from the lungs and passes it tothe left ventricle. The left ventricle pumps the blood throughout thebody.

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Term
Winter
Professor
N/A
Tags
right ventricle, left ventricle, Common carotid artery, right atrium

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