Circulatory System Quiz 339 (20 MCQs)

Quiz Instructions

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1. What large vessel takes blood to the bottom half of the body?

Correct Answer: A) Descending aorta.

2. The first sound in the cardiac cycle is caused by the

Correct Answer: C) Closing of the atrio-ventricular valves.

3. What is the function of the capillaries in the alveoli?

Correct Answer: A) To insert oxygen into the blood and transport that oxygen to the rest of the body.

4. What gas do we breath when we exhale?

Correct Answer: C) Carbon dioxide.

5. Which is the main organ of the circulatory system?

Correct Answer: C) Heart.

6. White blood cells are also known as

Correct Answer: B) Leukocytes.

7. Which is part of the digestive system?

Correct Answer: C) Stomach.

8. Vasoconstriction is the ..... of blood vessels and vasodilation is the ..... of blood vessels.

Correct Answer: B) Narrowing/Expanding.

9. How much blood is pumped every minute?

Correct Answer: A) 5 liters.

10. Which organ that pumps the blood?

Correct Answer: C) Heart.

11. Blood is mostly made of:

Correct Answer: A) Plasma.

12. Platelets can cause a ..... when coagulation occurs unnecessarily.

Correct Answer: A) Thrombus.

13. The pulse is not felt

Correct Answer: B) Venous Vessels (Back) [6].

14. The left side of the heart pumps blood away to the .....

Correct Answer: C) Rest of the body.

15. All of the structures below are part of the circulatory system EXCEPT .....

Correct Answer: D) Spinal Cord.

16. What is the fluid portion of blood called?

Correct Answer: C) Plasma.

17. How many ounces of blood does the heart expel with each beat?

Correct Answer: C) 2.

18. Which of the following increases heart rate?

Correct Answer: D) Epinephrine.

19. Red blood cells are

Correct Answer: D) Erythrocytes.

20. What is the purpose of the pericardial fluid?

Correct Answer: C) Reduces friction in the heart.