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Ch 19: Functions

StructureFunction
Atria Collection chambers
Ventricles Pumping chambers
Interatrial Septum Separates atrium
Interventricular Septum Separates ventricles
Valves Keeps blood flowing in one direction
Tricuspid Valve ( Right AV Valve) Blood goes through from R atrium to R ventricle
Bicuspid Valve (Left AV Valve/Mitral Valve) Blood goes through from L atrium to L ventricle
Pulmonary Valve One-way valve that keeps blood going through the pulmonary trunk and out of the heart to the lungs
Aortic Valve One-way valve that that keeps blood going through the aorta and out of the heart to the rest of the body (except lungs)
Chordae Tendineae ( aka Heart Strings) Hold the AV valves in place while the heart pumps blood
Papillary Muscles Prevents backflow of blood into the atrial cavities
Trabeculae Carneae Helps ventricles pump blood
Great Vessels Carries blood to and from the heart
Inferior Vena Cava Carries deoxygenated blood that has circulated through the lower half of the body back to the right atrium
Superior Vena Cava Delivers oxygen into the bloodstream and removing carbon dioxide
Pulmonary Trunk Carries deoxygenated blood from the heart to the lungs
Pulmonary Arteries Carries deoxygenated blood from the heart to the lungs
Pulmonary Veins Carries oxygenated blood from the lungs to the left atrium
Aorta Main artery that carries blood from the heart to the rest of the body
Coronary Circulation Delivers oxygenated blood to the coronary arteries
Coronary Sulcus Separates atria and ventricles
Right Coronary Artery Specifically provides blood to the right atrium
Left Coronary Artery Supplies blood to both the left atrium and left ventricles
Circumflex Artery Branches off from the left coronary artery and supplies most of the left atrium
Anterior Interventricular Artery (Widow maker) {aka left anterior descending artery} Supplies the apex, anterolateral myocardium, and interventricular septum
Great cardiac vein Returns deoxygenated blood (metabolic waste products) from the anterior surfaces and the left ventricle.
Created by: CombatWife7
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