Circulatory System Quiz 473 (20 MCQs)

Quiz Instructions

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1. Which blood vessel contains valves which prevent blood from flowing the wrong direction?

Correct Answer: D) Vein.

2. The red blood cells have a lifespan of 120 days. What happens to the blood cells after 3 months?

Correct Answer: D) It will be kept in the liver.

3. The chief function of lymph nodes in mammals is to:

Correct Answer: D) Destroy pathogens.

4. If a persons blood pressure is 140/ 100. His condition is..... A person's blood pressure is 140/100. His situation

Correct Answer: B) Hypertension is high blood pressure.

5. Blood is transported through three types of blood vessels: ....., ..... and .....

Correct Answer: A) Arteries/veins/capillaries.

6. ●Blood vessels-smallest blood vessels that connects arteries and veins.

Correct Answer: C) Capillaries.

7. Explain the rate of blood flow to the size of the vessels? Smaller blood vessels: ..... Larger blood vessels: .....

Correct Answer: A) Smaller:Faster the flowLarger:Slower the flow.

8. What is responsible for guttation?

Correct Answer: B) Root pressure.

9. What would happen if your arteries cannot deliver blood?

Correct Answer: A) Your tissues would not get the oxygen they need.

10. What are the tubes that return blood to the heart?

Correct Answer: A) Veins.

11. Oxygen Poor blood enters the right atrium by the

Correct Answer: B) Superior and Inferior vena cavas.

12. Pumps oxygen-rich blood to the body.

Correct Answer: B) Left ventricle.

13. Why does artery need thicker wall compared to veins?

Correct Answer: C) Artery has to deliver the oxygenated blood.

14. Bones that surround and protect your lungs and heart.

Correct Answer: A) Ribs.

15. Fats in the intestine are the absorbed by lymphatics

Correct Answer: A) True.

16. Valves of the Heart:Between LV and Aorta

Correct Answer: C) Aortic valve.

17. What part of the blood helps fight disease?

Correct Answer: B) White blood cells.

18. Which is included in the circulatory system?

Correct Answer: A) Heart, blood, and blood vessels.

19. Which of the following muscles have the ability to cause blood vessels to dilate or constrict depending on external conditions?

Correct Answer: C) Smooth muscle.

20. What is the function of the right ventricle in the heart?

Correct Answer: C) It pumps blood into the pulmonary artery towards the lungs.