Circulatory System Quiz 497 (20 MCQs)

Quiz Instructions

Select an option to see the correct answer instantly.

1. I carry de-oxygenated blood BACK towards the heart

Correct Answer: B) Veins.

2. There 2 atria and 2 ventricles

Correct Answer: A) True.

3. What is the major function of RBCs (red blood cells)?

Correct Answer: D) Transport oxygen.

4. What carries blood away from the heart?

Correct Answer: C) Artery.

5. These 2 body systems are located throughout most of your body.

Correct Answer: B) Nervous and circulatory.

6. Anemia is caused by a lack of .....

Correct Answer: A) Iron.

7. What component of the blood is 90% water?

Correct Answer: B) Plasma.

8. The hepatic vein takes blood away from which organ?

Correct Answer: C) Liver.

9. Which blood cells are smallest in size and colorless.

Correct Answer: C) Platelets.

10. Plasma is about ..... water

Correct Answer: B) 90 %.

11. Which ventricle receives blood from the right atrium & pumps it out to the lungs, where it picks up a new supply of oxygen?

Correct Answer: B) Right ventricle.

12. Which is part of blood responsible to fight infections?

Correct Answer: B) White blood cells.

13. The most important muscle in the body is the

Correct Answer: B) Heart.

14. The top two chambers of the heart are called the

Correct Answer: A) Atria.

15. If someone with type A blood receives a transfusion of type B blood what will occur?

Correct Answer: A) Agglutination or hemolysis.

16. ..... have circulatory systems where two aortas generally exist.

Correct Answer: D) Reptiles.

17. The opening of semilunar valves is due to

Correct Answer: A) Increased ventricular pressure.

18. RED LIQUID THAT FLOWS AROUND DE BODY IN BLOOD VESSELS

Correct Answer: B) BLOOD.

19. In veins, vasa vasorum reaches up to .....

Correct Answer: A) Tunica media.

20. True or False:The valves are the part of the heart that causes the heartbeat sound.

Correct Answer: A) True.