Question

what are the function of heart and how does it works

Answer 1

it pump the blood to the various parts of body
by getting oxygen from the air it pumps blood by haemoglobin in red blood cells

Answer 2

its an important organ of the body.the pulmonary artery present in the right auricle transport the deoxygenated blood to right ventricle and the left auricle delivers the oxygen to left ventricle.which delivers it to respective lungs