Question

Why is the heart is divided into oxygenated and deoxygenated blood

Answer 1

Humans have high energy a highly efficient supply of blood needs to keep their body warm .Hence,they cannot tolerate any mixing of blood

Answer 2

Blood is pumped from veins of the systemic circuit into the right atrium of the heart, then into the right ventricle. Blood then enters the pulmonary circuit and is oxygenated by the lungs. ... It is divided into four chambers: two atria and two ventricles