Circulatory System Quiz 698 (20 MCQs)

Quiz Instructions

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1. The atrium is in this section of the heart

Correct Answer: A) Top.

2. Human heart is made up of which kind of muscles?

Correct Answer: A) Cardiac muscles.

3. Is the aorta the smallest part?

Correct Answer: B) False.

4. Where does oxygenated blood travel to from the lungs

Correct Answer: C) Right atrium.

5. What is it called when the heart is beating too slowly

Correct Answer: A) Bradycardia.

6. This keeps blood from flowing backwards in the heart

Correct Answer: C) Valves.

7. The heart has 4 chamber

Correct Answer: A) True.

8. The ..... is the sound of the heart makes when it pumps blood.

Correct Answer: A) Heartbeat.

9. Why does heartbeat rate decrease in large animals? Why do larger organisms have lower heart rates?

Correct Answer: D) All the above are correct.

10. The extracellular matrix of blood is called

Correct Answer: A) Plasma.

11. Which system has this function:carry nutrients and oxygen to all our body?

Correct Answer: C) Circulatory system.

12. The highly branched nature of capillaries results in

Correct Answer: D) All of the above.

13. Which of the following are biotic factors in an ecosystem?

Correct Answer: B) Plants, animals, and bacteria.

14. What is the purpose of the Capillaries?

Correct Answer: C) Exchange between blood and tissue cells.

15. What is the purpose of valves in the heart?

Correct Answer: C) To prevent backward flow of blood.

16. A structure that acts as a one-way gate

Correct Answer: C) Heart valve.

17. This blood vessel carries deoxygenated blood from the body to the right atrium

Correct Answer: B) Vena cava.

18. Heart Attack Warning Sign:Anxiety and sleep disturbances.

Correct Answer: B) Women.

19. Haemoglobin is the carrier of .....

Correct Answer: C) Oxygen.

20. Gas exchange occurs between the .....

Correct Answer: B) Capillaries and alveoli.