Structure of heart

• Muscular walls to provide a strong heartbeat
• The left ventricle wall is thicker than the right ventricle wall because it has to pump blood all around the body
• It has 4 chambers that seperate the oxygenated blood from the deoxygenated blood
• Valves prevent backflow of blood when the heart contracts.
• Coronary arteries cover the heart to provide its own oxygenated blood supply
• structure of heart

  A) vena cava

  B) right atrium

  C) semilunar valve

  D) right ventricle

  E) left ventricle

  F) semilunar valve

  G) left atrium

  H) valves

  I) pulmonary artery

  J) aorta

  K) pulmonary artery