What is the function of human heart? How blood circulate through it and other part of the body?

Organs → venous capillaries venules (deoxygenated blood) → veins

→ superior and inferior venacaval right auricle right ventricle

- pulmonary aorta → lungs (for oxygenation) → pulmonary veins

left auricle (oxygenated blood) left ventricle systemic aorta

► arteries → arterioles and arterial capillaries → organs.

pump blood

Explanation:

through arteries