Answer: Mammalian hearts pumps blood round the body and
It consist of four chamber( Right auricle,left auricle,Right ventricle and right ventricle). The right and left auricle makes up the right heart while the left auricle and ventricle makes up the left heart.
Explanation:The heart circulates blood through two pathways: the pulmonary and the systemic circuit.
Pulmonary arteries takes in oxygenated blood from the lungs and the veins carries out deoxygenated blood.