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contained in the pericardium; a simple epithelium that lines the pericardial cavity and secretes serous fluid
found in the pareital pericardium; supports the heart and vessels in the mediastinum
composed of cardiac muscle tissue and constitutes most of the heart wall. Composed of cardiocytes.
four chambers of heart
right atrium, left atrium (both are upper chambers), right ventricle, left ventricle (both are lower chambers)
blood flows here from atria; these are pumping chambers; squeeze walls together to pressurize blood to send out to circuits.
branches into the major systemic arteries, which transport oxygenated blood to all body tissues.
four valves of heart
tricuspid valve, pulmonary semilunar valve, biscupid valve, aortic semilunar valve.
right atrioventricular valve; joins the right atrium and right ventricle; has three flaps.
left atrioventricular valve; mitral valve; joins the left atrium and left ventricle; has two flaps.
pulmonary semilunar valve
located at the base of the pulmonary trunk; prevents the backflow of blood into the right ventricle.
aortic semilunar valve
located at the base of the aorta; prevents the backflow of blood into the left ventricle.
deoxygenated path of blood in heart
superior/inferior vena cava, right atrium, tricuspid valve, right ventricle, pulmonary semilunar valve, pulmonary trunk, pulmonary arteries, lungs.
oxygenated path of blood in heart
pulmonary veins, left atrium, bicuspid valve, left ventricle, aortic semilunar valve, aorta, body.
coronary circulation path
coronary arteries, marginal artery/posterior interventricular artery (from right coronary artery), circumflex branch/anterior interventricular branch (from left coronary artery).
collect deoxygenated blood from the myocardium; consists of great cardiac vein, middle cardiac vein, small cardiac vein, posterior cardiac vein.
cardiac muscle tissue
terms to know: intercalated disks, striations, branching; centrally located nucleus
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