Knr 182 exam 3 - Study guides, Class notes & Summaries

parietal pericardium - a loose fitting sac with dense fibrous connective tissue that encloses the heart Heart wall - composed of three layers (epicardium, myocardium, endocardium) Heart - main organ of the circulatory system Atria - receive blood Ventricles - pump blood Valves of the heart - allow for the flow of blood through the heart types of heart valves - Atrioventricular (between atria & ventricles) & semilunar (between ventricles & main vessels connected to them) Pulmonary circula...