Cardiac Anatomy Frank A. Acevedo, PA-C

Thoracic Divisions 3 major divisions Mediastinum contains most of thoracic structures Subdivisions exist

Heart Pericardium - fibrous, serous Points of Attachment (fibrous pericardium) -central tendon of diaphragm -sternopericardial ligaments

Cardiac Surfaces Sternocostal Diaphragmatic Base of the heart Apex

Right Atrium Superior and Inferior Vena Cava IVC has a “valve” Foramen Ovalis Coronary Sinus

Right Ventricle Less Muscular than Left Ticuspid Valve Papillary Muscles & Chordae Tendinae Pulmonary Valve

Left Atrium Forms most of base of the heart Pulmonary veins Mitral valve

Left Ventricle Primary pump Valvular control Aortic sinus

Coronary Sinus

Conducting System

Coronary Arteries

Cardiac Innervation Sympathetic fibers Parasympathetic fibers Afferent fibers of vagus nerve