The heart

• What is the primary function of the heart?

  To pump blood around the body
• What type of circulatory system does the heart operate in?

  A double circulatory system
• What type of blood does the right side of the heart pump?

  Deoxygenated blood
• Where does the right side of the heart pump blood to?

  To the lungs
• Where does the left side of the heart pump blood to?

  To the rest of the body
• What type of blood does the left side of the heart pump?

  Oxygenated blood
• What occurs in the capillary network of the lungs?

  Gas exchange takes place
• What happens to oxygen in the capillary network of the rest of the body?

  Oxygen diffuses out of the blood into the body's cells
• Why does the double circulatory system work well?

  It allows blood to be sent under high pressure to all parts of the body
• What is the name of the artery that carries blood from the heart to the body?

  Aorta
• What are the four chambers of the heart?

  • Right Atrium
  • Right Ventricle
  • Left Atrium
  • Left Ventricle
• How does blood return to the heart from the body?

  By a vein called the vena cava
• Why is the left side of the heart thicker than the right side?

  To pump blood under higher pressure
• What is the role of the pulmonary vein?

  To carry oxygenated blood to the heart
• What is the role of the vena cava?

  To return deoxygenated blood to the heart
• What happens to blood when it enters the heart from the body?

  It enters through the vena cava
• What is the significance of the heart's four chambers?

  They separate oxygenated and deoxygenated blood
• How does the structure of the heart support its function?

  The thick walls of the left ventricle enable high-pressure pumping