Human Heart. The Heart Is A Muscular Organ About The Size Of A Closed Fist That Functions As The Body’S Circulatory Pump. It Takes In Deoxygenated Blood Through The Veins And Delivers It To The Lungs For Oxygenation Before Pumping It Into The Various Arteries Which Provide Oxygen And Nutrients To Body Tissues By Transporting The Blood Throughout The Body. The Heart Is Located In The Thoracic Cavity Medial To The Lungs And Posterior To The Sternum.

KEYWORDS

aorta aortic artery atrial atrioventricular atrium auricle blood brachiocephalic cardiac carotid cava cavity chordae circulatory diastolic dupp ecg ekg endocardium epicardium fibers heart human interventricular lubb muscle muscular myocardium organ pericardium phase physiology pressure pulmonary purkinje relaxation sac semilunar septum systole tendineae tissue tricuspid valve vein vena ventricle ventricular vessels visceral