Circulatory System Quiz 51 (20 MCQs)

Quiz Instructions

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1. What is the name of the large vein that returns deoxygenated blood from the lower part of the body to the heart?

Correct Answer: B) Inferior vena cava.

2. Which of the following blood vessels has the thinnest walls?

Correct Answer: C) Capillary.

3. Which of the following contains oxygenated blood?

Correct Answer: A) Left atrium.

4. The sinoatrial node is located in the:

Correct Answer: B) Right atrium.

5. A blood vessel that carries blood away from the heart to the body's organs

Correct Answer: C) Artery.

6. Arteries carry blood ..... from the heart.

Correct Answer: A) Away.

7. Ensures unidirectional flow of blood; Covered by endothelium

Correct Answer: B) Cardiac valves.

8. Largest vein connected to the heart

Correct Answer: D) VENA CAVA.

9. Plants are producers, what do they produce that animals need to survive?

Correct Answer: C) Both Food and Oxygen.

10. The heart of a healthy person beats

Correct Answer: B) 70.

11. A blockage in a coronary artery can cause a person to suffer a .....

Correct Answer: A) Heart attack.

12. What does the blood drop off at the lungs before re-entering the heart through the left atrium?

Correct Answer: C) Carbon Dioxide (CO2).

13. Valves in veins

Correct Answer: C) Cause venous blood flow to go in only one direction.

14. The lower chamber on the right side of the heart

Correct Answer: C) Right ventricle.

15. The chamber of the heart responsible for receiving blood as it returns from the lungs after it has been reoxygenated.

Correct Answer: C) Left Atrium.

16. Seth wants to know if an apple's freshness will last longer if they are refrigerated. What is the dependent variable?

Correct Answer: B) The freshness of the apple.

17. If a person is in the ED for treatment of an Acute Myocardial Infarction (AMI) within 4 weeks of a prior, how would you sequence the categories?

Correct Answer: B) I22, I21.

18. When the ventricles contract, the bicuspid (mitral) valve prevents blood from flowing from the:

Correct Answer: B) Left ventricle to the left atrium.

19. Circulatory system of earthworm is .....

Correct Answer: B) (b) Closed.

20. Where material exchange takes place between the cells and blood vessels:

Correct Answer: D) Capillaries.