2 atria Coronary arteries, the hearts own blood supply 2 ventricles The heart has four chambers now lets look inside the heart It brings blood from the body, except the lungs. the left side of the system deals with oxygenated blood. the right side of the system deals with deoxygenated blood. Defined by branch that gives rise to posterior interventricular a.Lungs Body cells Our circulatory system is a double circulatory system.Left anterior descending (LAD) or anterior interventricular a.Originates from ostia in left aortic sinus.Right marginal arteries (acute marginal aa).Originates from ostia in right aortic sinus.Just superior to right and left cusps in the Sinus of Valsalva are the openings of the right and left coronary arteries, respectively.Helps to dampen aortic outflow and prevent cusps from adhering to walls of aorta.Just superior lies the Sinus of Valsalva.
Usually a greater number than the right, due to the increased pressures and strength necessary to prevent regurgutation.Contract to prevent Tricuspid valve regurgitation.Connected to cusps via Chordae tendinae.Anterior/Posterior/Septal cusps (leafs).Prevents backflow into coronary sinus during atrial systole.Incompetent in adult, directs IVC blood though Foramen ovale in fetus.Ligamentum arteriosum Left recurrent laryngeal n.Ĭhambers Right atrium Right ventricle Left atrium Left ventricle Valves Leaflet valves Tricuspid Bicuspid (mitral) Cusped (semilunar) valves Aortic Pulmonic Heart Features
Base is superior near origins of great vessels.Apex points inferiosinister (down and left).
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