Circulatory System Quiz 502 (20 MCQs)

Quiz Instructions

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1. Transportation of substances occurs by simple processes unicellular organisms.

Correct Answer: C) Both.

2. As blood travels from arteries to veins,

Correct Answer: C) Pressure drops.

3. The blood system is often known as the "double circulation" system. Why is this?

Correct Answer: C) The system is divided into two separate circuits.

4. The two chambers of the heart with thin walls that collect blood from the major veins and empty it into the larger, more muscular chambers.

Correct Answer: B) Atria.

5. In an open circulatory system the blood stays in the blood vessels and exchange of materials occur as the walls to the blood vessels are very thin

Correct Answer: B) False.

6. The part of the blood that carries oxygen to the cells and takes carbon dioxide back to the lungs

Correct Answer: B) Red blood cells.

7. These are the smallest of our blood cells and can only be seen under a microscope.

Correct Answer: A) Platelets.

8. Which of the following is the largest artery in the body?

Correct Answer: A) Aorta.

9. The ..... is the dome shaped muscle below the lungs

Correct Answer: A) Diaphragm.

10. The blood cells that fight infection are the .....

Correct Answer: B) Leukocytes.

11. Compared with those of the systemic circulation, arteries of the pulmonary circulation:

Correct Answer: D) All of them.

12. Which of the following statements is NOT true about the function of the blood?

Correct Answer: D) It makes our skin reddish in color.

13. Main parts include:brain, spinal cord, nerves

Correct Answer: D) Nervous system.

14. Veins get smaller when they get closer to the heart.

Correct Answer: B) False.

15. Which of the following is an example of non-circulating fluid in our body?

Correct Answer: C) Synovial fluid.

16. What is the meaning of "cells" ?

Correct Answer: A) Cells.

17. What is the muscular organ that pumps blood throughout the body?

Correct Answer: D) Heart.

18. The ..... are where the oxygen and nutrients are picked up by the blood

Correct Answer: C) Lungs.

19. Windpipe; a passage through which air moves in the respiratory system

Correct Answer: A) Trachea.

20. Why do arteries have to be thicker and stronger than veins?

Correct Answer: B) Blood pressure is higher in arteries.