Respuesta :

Homeworklegend

Explanation:

so there blood can go in and out of there arteries and ventricles

r20200h

Answer:

Explanation:

Because the 4 chambered heart prevents the mixing of oxygenated blood from the lung and deoxygenated blood from the body. However, In 3 chambered heart , both oxygenated and deoxygenated blood gets mixed.