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Circulatory System Quiz 350 (20 MCQs)

Quiz Instructions

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1. What is the circle of connected blood vessels that protects the brain by providing more than one route for blood to reach brain tissue
2. Saliva softening food is an example of
3. Veins are just as thick as arteries because the blood flowing back to the heart is pumped under pressure
4. The blood vessels that carry blood from the heart to all other parts of the body is:
5. Diseases that affect the system
6. The ..... is the place where your body has its last chance to absorb nutrients and water from the food you have eaten and it is also the place where the leftovers are turned into waste.
7. What % of your body mass is made up of blood?
8. Which organs help you breathe in oxygen and breathe out carbon dioxide?
9. What are the four types of blood?
10. The heart pumps blood around the body through a network of blood vessels that is over ..... miles
11. Which of the following formed elements have a life span of 20 to 120 days and are destroyed in the spleen of the liver?
12. System that circualtes the blood
13. The vessels with one-way valves to prevent blood from flowing backwards.
14. This is the movement of blood from the heart to the lungs, and back to the heart.
15. What is the double membrane that protects the heart.
16. Blood vessel structure:Outer layer composed of connective tissue
17. If heart stops pumping, then human will .....
18. The breakdown of food into small molecules, which are then absorbed into the body is the main function of which body system.
19. Pulse we feel at inner part of wrist is called .....
20. Veins carry blood to your heart.
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