Details Title: 2130, lab exam 1 Description: ex. 30, anatomy of the heart Total Flash Cards: 34 Created: 02/09/2007 09:55:36		New Users: To study from this flashcard set, or to create your own your own study flash cards, REGISTER HERE. Existing Users: CLICK HERE. Additional Anatomy Flashcards
Cards in this set: Term cardiovascular system Definition carries O2, digested foods, cell wastes, electrolytes, and many other sustances. Term Heart Definition cone-shaped, located in the mediastinum Term apex Definition pointed end of the heart, extends slightly to the left and rests on the diaphragm Term base Definition broad side of the heart from which the great vessels emerge. Term visceral pericardium Definition epicardium, thin, closely applied to the heart muscle Term parietal pericardium Definition outer, loosely applied. attached at the heart apex to the diaphragm, produce serous fluid which allows the heart to beat in a relatively frictionless environment. Term fibrous pericardium Definition composed of dense connective tissue, outside of the perietal pericardium Term pericarditis Definition inflammation of the pericardium, causes painful adhesions between the srous pericardial layers, interferes with heart movements Term myocardium Definition cardiac muscle Term atria Definition the two superior chambers of the heart Term ventricles Definition lower chambers of the heart Term enocardium Definition serous endothelium which lines the chambers of the heart Term interatrial/interventricular septum Definition the septum that divides the heart longitudinally Term superior and inferior venae cavae Definition the large veins that feed the right atrium Term pulmonary veins Definition there are four, which deliver oxygen rich blood to the left atrium Term pulmonary trunk Definition that which carries blood from the right ventricle to the lungs. Term Atrioventricular (AV) valves Definition four valves which enforce one-way blood flow through the heart chambers Term bicuspid valve Definition lefter atrioventricular valve, aka mitral valve, has two flaps of endocardium Term tricuspid valve Definition right atrioventricular valve Term chordae tendinae Definition tiny white collagenic cords which anchor the cusps to the ventricular walls Term papillary muscles Definition small bundles of cardiac muscle that project from the myocardial wall Term diastole Definition the period of ventricular filling Term pulmonary and aortic semilunar valves Definition a second set of valves, composed of three pocketlike cusps, which guard the bases of the two large arteries leaving the ventricluar chambers. Term pulmonary circulation Definition the job of the right side of the heart, getting the O2-poor blood to the lungs for a refill. Term systemic circulation Definition Left side of the heart, carries O2-rich blood fromt he left heart through the body tissues and back to the right heart. Term coronary arteries Definition start from the bast of the aorta just about the aoritic semilunar valve and encircle the heart Term atrioventricular groove Definition where the coronoary arteries encircle, at the junction of the atria and ventricles. Term great, middle, and small cardiac veins Definition veins that serve the heart and empty into the coronary sinus, which empties into the right atrium Term intercalated discs Definition where the myocardium cells interdigitate, which provides a continuity to cardiac muscle not seen in other muscle tissues and allows close coordination of heart activity. Term auricles Definition earlike flaps of tissue projectiong from the atrial chambers Term ligamentum arteriosum Definition a cordlike remnant of the ductus artiosus Term ductus arteriosus Definition allows blood to pass directly fromt he pulmonary trunk to the aorta in the fetus to bypass the non-functional fetal lungs. Term fossa ovalis Definition an oval depression in the interatrial septum, the site of an opening in the fetal heart the foramen ovale. Term trabeculae carneae Definition pits and ridges of the inner ventricular muscle