how long is the human heart? How wide is it? 14cm long, 9cm wide É/–ü¼’â@The heart is located in which cavity of the body? What does the heart rest on? In the mediastinum (Thoracic Cavity), resting on the diaphragm É/–ü¼’â@The serous pericardiumin on the (inside or outside) of the heart? Where is the fibrous Pericardium located? serous Pericardium in on the inside - fibrous pericardium = outside É/–ü¼’â@Name the 3 layers of the serous pericardium. Parietal layer, pericardial cavity, visceral layer (aka epicardium) É/–ü¼’â@This is which layer of the heart - epithelium and connective tissue containing elastic and collagenous fibers as well as Purkinje fibers ? Endocardium É/–ü¼’â@Name the 3 layers of the heart Epicardium (aka visceral layer), Myocardium, Endocardium É/–ü¼’â@Which layer of the heart is the protective layer, serous membrane w/ connective tissue covered by epithelium? Epicardium (aka visceral layer) É/–ü¼’â@Which layer of the heart is referred to as the cardiac muscle? Myocardium É/–ü¼’â@What are the 2 blood circuits in the body? Pulmonary circuit and systemic circuit É/–ü¼’â@which blood circuit recieves blood returning to the heart from the body and sends it through the lungs for oxygenation? pulmonary circuit É/–ü¼’â@which blood circuit supplies the entire body w/ oxygenated blood? systemic circuit É/–ü¼’â@complete the blood flow chart = superior venae cavae - rt atrium - _______ --________ -- rt ventricle -- ________ -- ________ -- pulmonary trunk rt atrium contraction -- tricuspid valve -- rt ventricle -- rt ventricle contracts + tricuspid valve closes -- pulmonary semilunar valve -- pulmonary trunk É/–ü¼’â@The pulmonary _____ (arteries or veins) transport blood to the lungs. arteries É/–ü¼’â@ finish the blood flow -- pulmonary trunk -- pulmonary arteries -- oxygenated blood back to the heart Lft atrium via ________ pulmonary veins É/–ü¼’â@lft atrium contracts -- ______ -- _______ -- lft ventricle wall contracts ( _____ ) -- aortic semilunar valve -- ______ bicuspid valve -- lft ventricle -- lft ventricle contracts (bicuspid valves close )-- aortic semilunar valves -- aorta É/–ü¼’â@blood supply to the heart is known as _____ circulation coronary circulation É/–ü¼’â@blood is supplied to the heart by the _________ ( ______) first two branches of the aorta (rt + lft coronary arteries) É/–ü¼’â@The rt + lft coronary arteries arise fromt he base of the aorta and encircle the heart in the ________. atrioventricular groove É/–ü¼’â@the left coronary arteery is made up of ? 1)anterior interventricular artery 2) circumflex artery É/–ü¼’â@The anterior interventricular artery supplies blood to the ? interventricular septum + anterior walls of the both ventricles É/–ü¼’â@The right coronary artery is made up of what? 1) the posterior interventricular artery 2) marginal artery É/–ü¼’â@The marginal artery supplies blood to the ? myocardium of the rt side of the heart É/–ü¼’â@The posterior interventricular artery runs ? runs to the apex and supplies blod to the posterior ventricular walls É/–ü¼’â@The circumflex artery supplies blood to ? the left atrium and the posterior walls of the left ventricle É/–ü¼’â@the myocardium ______ are branches of cardiac veins which join to form the _______ capillaries, join to form the coronary sinus É/–ü¼’â@the coronary sinus is an enlarged vein which empties into the rt atrium É/–ü¼’â@unit contraction = functional syncytium É/–ü¼’â@the cardiac muscle fibers are interconnected in branching networks (via _______) that spread in all directions through the heart intercalated disks É/–ü¼’â@The sinoatrial node (SA node) is also referred to as the? pacemaker É/–ü¼’â@ É/–ü¼’â@