Mediastinum Qs&As 100% Verified Review Solution

Mediastinum Qs&As 100% Verified Review Solution Mediastinum - ANS-Contains all thoracic viscera, nerves and vessels except the lungs and those in thoracic wall Mediastinum - ANS-Extends from superior thoracic aperture to diaphram Mediastinum - ANS-Extends from sternum ad costal cartilages to bodies of thoracic vertebrae Transverse thoracic plane - ANS-Mediastinum divided by this at sternal angle and juntion of T4 and T5 Pericardium, heart and roots of great vessels - ANS-Contents of middle mediastinum Pericardium - ANS-Inferior division of mediastinum is done by Fibroserous membrane - ANS-Closed sac that covers heart and beginning of great vessels Pericardium - ANS-Divides inferior mediastinum into posterior, anterior, and middle mediastinum Fibrous, parietal serous and visceral serous - ANS-Layers of pericardium Superior thoracic aperture (T1 rib 1 and sternum) - ANS-Superior boundary of mediastinum Diaphragm - ANS-Inferior boundary of mediastinum Pleural cavities - ANS-Lateral boundaries of mediastinum Sternum - ANS-Anterior boundary of mediastinum Bodies of thoracic vertebrae - ANS-Posterior boundary of medaistinum Pericardial cavity (parietal and visceral serous pericard) - ANS-Contains fluid that enables heart to move and beat in frictionless environment Visceral serous pericardium - ANS-Extends onto beginning of great vessels, continuous with parietal layer of serous pericardium Visceral serous pericardium - ANS-Continuous with tunica of great vessels, central tendon of diaphragm Aorta - ANS-Comes out of left ventricle Superior vena cava - ANS-Comes out of right atrium Pulmonary trunk - ANS-Comes out of right ventricle Atrialventricular sulcus - ANS-Splits ventricles and atrium Anterior interventricular sulcus - ANS-Splits right and left ventricles on anterior side Right coronary artery - ANS-Comes out of aorta and splits into sinuatrial artery and right marginal artery into anterior interventricular sulcus which runs with small cardiac vein Left coronary artery - ANS-Comes out of aorta and divides into circumflex artery and anterior ventricular artery running into sulcus Great cardiac vein - ANS-Travels with anterior interventricular sulcus Posterior interventricular artery - ANS-In posterior view, right coronary artery becomes this "third branch" Right artrium - ANS-Has opening for coronary sinus Fossa ovale - ANS-Last during development to close Right side of heart - ANS-Receives poorly oxygenated blood thru SVC and IVC Right side of heart - ANS-Pumps de-oxygeated blood thru pulmonary trunk arteries to lungs for oxygenation Left side of heart - ANS-Receives oxygenated blood via pulmonary veins into left atrium Left side of heart - ANS-Pumps oxygenated blood into aorta and to arteries of body Right and left atria - ANS-Receiving chambers that pump blood into ventricles Right and left ventricles - ANS-Discharging chambers Epicardium - ANS-Thin external layer of heart formed by visceral serous pericardium Myocardium - ANS-Thick, helical middle layer composed of cardiac muscle