Circulatory System Quiz 654 (20 MCQs)

Quiz Instructions

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1. The blood vessels that connect the ends of the smallest arteries with the ends of the veins are.....

Correct Answer: C) Capillary.

2. The respiratory system has how many parts?

Correct Answer: B) 3.

3. The second heart sound occurs when the ..... valves close.

Correct Answer: B) Semilunar.

4. When we breathe out, the ..... leaves our lungs.

Correct Answer: A) Carbon dioxide.

5. What does our circulatory system carry to all parts of our bodies?

Correct Answer: D) Nutrients and Oxygen.

6. ..... is the main artery of the heart carrying oxygenated blood to all parts of the body except the lungs.

Correct Answer: B) Aorta.

7. If the volume of a cell increases when it is placed in a solution, that solution is said to be ..... to the cell

Correct Answer: D) Hypotonic.

8. All of the following contain oxygenated blood except:

Correct Answer: D) Right ventricle.

9. Its pump bloodstrong muscle

Correct Answer: A) Heart.

10. Characterized by too much production of white blood cells in the blood

Correct Answer: D) Leukemia.

11. What is NOT a layer of a blood vessel?

Correct Answer: C) Hard tunic.

12. Which blood vessel has the lowest pressure?

Correct Answer: B) Vein.

13. Chamber of the heart that is responsible for pumping low oxygen blood to the lungs.

Correct Answer: C) Right Ventricle.

14. Most veins carries deoxygenated blood back to the heart ....., carries oxygen-rich blood from the lungs.

Correct Answer: C) Pulmonary veins.

15. Which level of organization is a heart at?

Correct Answer: C) Organ.

16. What is the function of the lymph nodes?

Correct Answer: D) Filter lymph & remove impurities.

17. The AV node causes

Correct Answer: C) Ventricular Contraction.

18. Ava, Abigail, and Lily are comparing their heart rates during a biology class. How many times does the average human heart beat per minute?

Correct Answer: B) 60 to 90 times.

19. When measuring blood pressure, you are measuring the ..... of blood flowing in arteries.

Correct Answer: C) Force.

20. A mass of nervous tissue responsible for sending electrical signals to the heart to cause it to contract is the

Correct Answer: D) Sinoatrial node.