The heart ? Consist of 4 chambers ? Function : Pump oxygenated blood to all parts of the body and to remove waste such as carbon dioxide in the cells. External Anatomy External Anatomy L R Right Atrium External Anatomy L R Right Ventricl e External Anatomy L R Left Atrium External Anatomy L R Left Ventricle Internal Anatomy R L Right Atrium Internal Anatomy R L Right Ventricle Internal Anatomy R L Left Atrium Internal Anatomy R L Left Ventricle Direction of blood Deoxygenated blood from the body ? right atrium ? right ventricle The deoxygenated blood ?the lungs where gases exchange occurs. Carbon dioxide is removed and the blood is oxygenated. Oxygenated and nutrient