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Circulatory System Quiz 1 (25 MCQs)

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1. The blood in the vena cava is _____
2. What color is oxygenated blood?
3. A horse has flat teeth because it is a
4. Prevents backflow into the left atrium
5. These cells play a vital role in defending the body against infection
6. Which is not a type of blood vessel?
7. Which component of the blood helps fight disease?
8. _____ carries about the oxygen-poor blood from the heart to the lungs under low pressure.
9. How long does it take for you blood to complete one cycle?
10. This chamber of the heart pumps the blood back out to the body cells through the Aorta
11. Blood does not clot in the absence of Vitamin K because it is.
12. What makes up around 55% of the blood?
13. What does your heart do?
14. The scientist who discovered the blood groups is.
15. Where in the body will you find blood vessels?
16. What is the liquid part of blood?
17. Oxygen-transporting protein in red blood cells that gives the cells their characteristic red color.
18. What physical feature of large systemic arteries (resistance vessels) makes them relatively more responsive to changes in intracellular calcium concentrations?
19. Vessels leaving the heart are known as.
20. Left side of the heart is high in
21. Erythroblastosis foetalis is a disease affecting.
22. The job of the heart is to?
23. A type of blood vessel that has thick walls and lined with smooth muscles.
24. What are the two main types of blood cells?
25. The insects do not have pigments in blood because.
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