Cardiovascular System Study Guide

Cardiovascular System Study Guide Location of the Heart ️in thorax between the lungs in the inferior mediastinum Pericardium ️superficial double-layered serous membrane that surrounds the heart Two layers of the hert serous membrane ️visceral pericardium (epicardium), parietal pericardium Parietal Pericardium ️outside layer that lines the inner surface of the fibrous pericardium Serous Fluid ️fills the space between the layers of pericardium Epicardium ️outermost connective tissue layer of the heart Myocardium ️cardiac muscle Endocardium ️inner lining of the heart Atria ️receiving chambers Heart Septa ️interventricular septum, interatrial septum Atrioventricular (AV) valves ️between atria and ventricles AV Valves anchored in place by... ️chordae tendineae Bicuspid (mitral) valve ️left side of heart Tricuspid valve ️right side of heart Semilunar Valves' Location ️between ventricle and artery 2 Types of Semilunar Valves ️Pulmonary, aortic Coronary Arteries ️branch from the aorta to supply the heart muscle with oxygenated blood Cardiac Veins ️drain the myocardium of blood Coronary Sinus ️large vein on the posterior of the heart, receives blood from cardiac veins Blood empties into the right atrium via the... ️coronary sinus Sinoatrial (SA) node ️pacemaker; in right atrium Atrioventricular (AV) node ️at the junction of the atria and ventricles Atrioventricular bundle ️in the interventricular septum Purkinje fibers ️spread within the ventricle wall muscles Tachycardia ️rapid heart rate over 100 beats per minute Bradycardia ️slow heart rate less than 60 beats per minutes