Human Heart and Blood Quiz
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Questions and Answers

What are the three different components of blood and their main functions?

  • Red blood cells (transport oxygen), white blood cells (transport nutrients and waste), and plasma (fight infection)
  • Red blood cells (transport nutrients and waste), white blood cells (transport oxygen), and plasma (fight infection)
  • Red blood cells (fight infection), white blood cells (transport oxygen), and plasma (transport nutrients and waste)
  • Red blood cells (transport oxygen), white blood cells (fight infection), and plasma (transport nutrients and waste) (correct)
  • What is the importance of the coronary arteries with regards to healthy heart function?

  • They remove waste products from the heart muscle
  • They supply oxygen and nutrients to the heart muscle (correct)
  • They transport blood to the lungs for oxygenation
  • They regulate the heart rate
  • How can atherosclerosis potentially severely impact the heart?

  • By narrowing or blocking the coronary arteries, reducing blood flow to the heart muscle (correct)
  • By increasing the heart rate and blood pressure
  • By causing the heart muscle to become weak and enlarged
  • By reducing the amount of oxygen in the blood
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