1. Blood is continuously pumped through the body by which of the following organs?
2. What are the two main types of blood vessels?
3. Arteries carry blood ______ the heart and veins carry blood ______ the heart.
4. White blood cells do which of the following?
5. Which of the following create blood clots to stop bleeding?
6. True or False: The heart is about the size of your fist.
7. What is the aorta?
8. How many sets of valves are in the heart?
9. Which of the following is NOT one of the four main blood types?
10. True or False: While each blood type has different antibodies and antigens, blood type is not a factor in blood donations.