The heart

• What is the primary function of the heart?

  To pump blood around the body
• What does double circulation mean in the context of the heart?

  Blood travels through the heart twice per circuit
• What does the pulmonary artery carry?

  Deoxygenated blood to the lungs
• What is the function of the aorta?

  To carry oxygenated blood at high pressure
• What does the pulmonary vein do?

  Returns oxygenated blood from the lungs
• Which chamber of the heart receives blood from the body?

  Right atrium
• Which chamber of the heart receives blood from the lungs?

  Left atrium
• What is the function of the vena cava?

  Returns blood from the body
• What prevents backflow of blood in the heart?

  Valves
• What does the right ventricle do?

  Pumps blood to the lungs
• What does the left ventricle do?

  Pumps blood around the body
• Why are the ventricles thicker than the atria?

  They pump blood and require more force
• Why does the left ventricle have a thicker muscular wall?

  It pumps blood around the entire body
• How do valves function in the heart?

  They ensure unidirectional blood flow
• What do coronary blood vessels supply?

  Blood to the heart muscle
• What are the two types of chambers in the heart?

  • Atria: Upper chambers receiving blood
  • Ventricles: Lower chambers pumping blood
• What is the role of the heart's structure in blood circulation?

  • Atria receive blood from body/lungs
  • Ventricles pump blood to lungs/body
  • Valves prevent backflow
  • Coronary vessels supply heart muscle
• What is the role of the ventricles in the heart?

  They pump blood to lungs and body
• What is the role of the atria in the heart?

  They receive blood from the body and lungs
• What is the function of the heart valves?

  Prevent backflow of blood
• What is the significance of the coronary blood vessels?

  They supply blood to the heart muscle