ORGANS:

Tigers have a chambered heart and their system is close to a humans with the heart having the 3 layers of the heart, the epicardium ,myocardium, and pericardium. It has the left and right atriums, both ventricles, the vena cava, and the aorta along with the branches. Each branch has a purpose and the overall flow of blood throughout the heart is relatviely simple. Deoxygenated blood enters and does not mix with the oxygen rich blood. The oxygen poor passes through the veins to be converted.