Right atrium, Left atrium, Right ventricle, Left ventricle, Aorta (an artery), Vena cava (a vein), Pulmonary artery (carrying deoxygenated blood to the lungs), Pulmonary vein (carrying oxygenated blood to the heart), Capillaries in the lungs, Capillaries in the muscles.

Double circulatory system

Leaderboard

Visual style

Mga Option

I-switch ang template

I-restore ang gi-autosave: ?