Heart and blood vessels

• What are the main components of blood?

  • Red blood cells
  • White blood cells
  • Blood plasma
  • Platelets
• What are the types of blood vessels mentioned?

  Arteries, veins, and capillaries
• What is the difference between systemic and pulmonary circulation?

  • Systemic circulation: Oxygenated blood travels from the heart to the body.
  • Pulmonary circulation: Deoxygenated blood travels from the heart to the lungs.
• What is the function of the pulmonary artery?

  It carries deoxygenated blood from the heart to the lungs
• What is the function of the aorta?

  It carries oxygenated blood from the heart to the body
• What is the role of the vena cava?

  It carries deoxygenated blood from the body to the heart
• What is the function of the pulmonary vein?

  It carries oxygenated blood from the lungs to the heart
• Why do veins have valves?

  To prevent blood from flowing backwards
• Why does the left side of the heart work harder?

  Because it needs to pump oxygenated blood all around the body
• What is coronary heart disease (CHD)?

  • A condition affecting the coronary arteries
  • Leads to less oxygen being delivered to the heart
  • Can result in heart problems