Circulatory System Quiz 390 (20 MCQs)

Quiz Instructions

Select an option to see the correct answer instantly.

1. Where is blood made?

Correct Answer: C) Bone Marrow.

2. 3

Correct Answer: D) Superior vena cava.

3. What type of blood vessel has one-way valves that allow blood to only move in one direction?

Correct Answer: B) Veins.

4. Which body structures have walls one cell thick?

Correct Answer: C) Capillaries and alveoli.

5. What organ is described? the "pump" of the body, a muscular, hollow organ, the size of a fist, in the mediastinal cavity.

Correct Answer: D) Heart.

6. Which blood cell is involved in the immune/antibody response?

Correct Answer: B) Lymphocyte.

7. When we breath out (exhalation)

Correct Answer: B) The diaphragm relaxes and rises. it pushes the air out of the lungs.

8. A normal, soft, waxy substance found among lipids (fats) in the bloodstream and all body cells is called

Correct Answer: C) Cholesterol.

9. The function of our respiratory system is for

Correct Answer: A) Breathing.

10. A capillary is an extremely small blood vessel located within the ..... of the body, which allows for gas exchange.

Correct Answer: B) Tissues.

11. What do we call the vessels that return deoxygenated blood back to the heart?

Correct Answer: C) Veins.

12. What type of muscle is your heart?

Correct Answer: B) Cardiac.

13. What is the function of phagocytes in the circulatory system?

Correct Answer: D) To fight infection.

14. The blood flowing within the right ventricle travels to which part of the circulatory system next?

Correct Answer: A) Pulmonary artery.

15. What component of blood helps to prevents you from bleeding to death if you get a cut?

Correct Answer: C) Platelets.

16. The cells in the blood that help fight germs and illnesses are the .....

Correct Answer: A) White blood cells.

17. What are the two main blood vessels in the body?

Correct Answer: B) Arteries and Veins.

18. What connects bones together?

Correct Answer: A) Ligaments.

19. This type of vessel carries blood back TO the heart from other areas and organs in our bodies:

Correct Answer: A) Vein.

20. What is the scientific name for white blood cells?

Correct Answer: C) Leukocytes.