Circulatory System Quiz 353 (20 MCQs)

Quiz Instructions

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1. Who conducted experiments to prove passage of blood in veins? Who experimented to discover the circulation of blood in veins?

Correct Answer: A) William Harvey William Harvey.

2. Your circulatory system is made up of what two systems?

Correct Answer: C) Lymphatic, cardiovascular.

3. The vessel that is only one cell thick and allows gases and nutrients to exchange from the blood to the body's cells.

Correct Answer: C) Capillaries.

4. Small fragments of ruptured cells found in blood.

Correct Answer: A) PLATELETS.

5. The dome-shaped muscle that plays an important role in breathing is the

Correct Answer: D) Diaphragm.

6. What is the point of initiation of the human heartbeat?

Correct Answer: B) Sinoatrial node.

7. Which are the main components of the circulatory system?

Correct Answer: A) Blood, blood vessels and heart.

8. A(n) ..... causes an antibody to be produced.

Correct Answer: B) Antigen.

9. What is the main problem faced by a multicellular organism in obtaining their cellular requirements and removing body waste?

Correct Answer: C) Total surface area per volume ratio becomes too small.

10. When in the lungs, the oxygen leaves the blood

Correct Answer: B) False.

11. These tubes carry blood around the body.

Correct Answer: A) Arteries and veins.

12. Oxygen is absorbed from the ..... in the ..... to make the blood oxygenated.

Correct Answer: A) Blood vessels in the lungs.

13. When the blood travels back to the heart in tubes, it is called arteries.

Correct Answer: B) False.

14. Which of the following is the scientific name for white blood cells?

Correct Answer: B) Leukocytes.

15. ..... carry oxygen to the body's tissues and make up most of the blood. They look like ..... without the holes and are made of the bone marrow

Correct Answer: A) Red Blood Cells/ doughnuts.

16. The ribs move up and out while the diaphragm contracts. This active action causes ..... ?

Correct Answer: A) Inhalation.

17. What chambers are located on each side of the heart?

Correct Answer: C) 1 atrium and 1 ventricle.

18. The function of all valves

Correct Answer: C) Prevent backflow.

19. The oxygenated blood flows to the left atrium through .....

Correct Answer: B) Pulmonary veins.

20. Where does the blood from the left side of your heart go?

Correct Answer: A) The rest of your body.