Mammal heart, chambers (Gross, Low)

Structure List Right ventricle Left ventricle Right auricle Left auricle Aorta Cranial vena cava Pulmonary trunk Left subclavian artery Brachiocephalic trunk Papillary muscle Chordae tendineae

There is a pulmonary circuit which pumps blood through the lungs and returns oxygenated blood to the heart. The right ventricle pumps blood to the lungs. Note the walls are less thick than the left ventricle. The pulmonary system is a lower pressure system than the systemic circulation.