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Blood Quiz: Do you know what's flowing through your veins?
by Staff
A vampire is headed straight for you. "I vant to drink your blood," he hisses. To prevent him from sucking the life force straight out of you, you decide to distract him with your amazing knowledge of blood. Take the quiz and prove yourself.

How many liters of blood does the adult human body contain?

  • 5 liters
  • 10 liters
  • 15 liters

How long does a red blood cell survive in the bloodstream?

  • 120 days
  • 1 year
  • forever

What is hemoglobin?

  • a chemical that stimulates the production of red blood cells
  • a molecule specially designed to hold waste products and remove them from the body
  • a molecule specially designed to hold oxygen and carry it to cells that need it

What is a hematocrit?

  • the measure of red blood cells in the blood
  • a hormone that stimulates production of red blood cells
  • the nucleus of a red blood cell

How does blood get its red color?

  • from proteins located in the bone marrow
  • from the waste products in the blood
  • from the iron in hemoglobin

What is the function of white blood cells?

  • to carry oxygen from the lungs
  • to fight infection
  • to create clots

What does it mean when there's an increase of white blood cells in the body?

  • There's an infection somewhere in the body.
  • Your body just finished fighting an infection.
  • There's no oxygen in the blood.

There are six main types of white blood cells in the blood. Which type is the most common?

  • lymphocytes
  • basophils
  • neutrophils

What substance makes up the majority of plasma?

  • proteins
  • water
  • electrolytes

If you are a universal donor, what blood type do you have?

  • A
  • AB
  • O

What are the two components that make up blood?

  • red blood cells and white blood cells
  • protein and water
  • cells and plasma

What is the function of platelets in the blood?

  • clotting
  • fighting infection
  • carrying oxygen from the lungs

Where are blood cells produced?

  • heart
  • bone marrow
  • blood vessels

What is hematopoiesis?

  • high blood pressure
  • blood clot
  • production of blood

Which of the following helps to remove carbon dioxide (CO2) from the body?

  • red blood cells
  • white blood cells
  • platelets

What is the name of the leftover fluid when plasma is clotted?

  • venom
  • water
  • serum

What type of blood has both A and B antigens?

  • A
  • O
  • AB

How often can you donate blood?

  • every eight weeks
  • as often as you like
  • every month

What is apheresis?

  • transferring blood from a donor to a recipient
  • separation of components in the blood
  • preserving donated blood

Red blood cells make up what percentage of the elements in blood?

  • 33 percent
  • 50 percent
  • 90 percent