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24 November, 2009

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Circulatory system - quiz

This quick health quiz will test your knowledge about the human circulatory system including the heart, blood vessels and blood pressure.

1. How big is the heart?
A. Large enough to fill the entire left side of the chest.
B. About the size of a clenched fist.
C. About the size of a golf ball.

2. The heart is divided into how many chambers?
A. Four - two atria and two ventricles.
B. Five - three atria and two ventricles.
C. Two - one atrium and one ventricle.

3. What is the sinus node?
A. A special cluster of cells in the right atrium that controls the heart rate.
B. A small chamber in the heart that collects diseased or damaged blood cells for disposal.
C. An acupressure point on the cheekbone that, when pressed, helps to calm a rapid heart rate.

4. Arteries from the heart deliver blood around the body, but which arteries give the heart its own blood supply?
A. Radial and ulnar arteries.
B. The renal arteries.
C. The coronary arteries.

5. What are capillaries?
A. The smallest blood vessels of the circulatory system.
B. The medical name for heart muscle cells.
C. Small lumps of fatty tissue that can clog blood vessels.

6. Which blood vessels have muscular walls that help to ‘massage’ blood along their lengths?
A. Capillaries.
B. Veins.
C. Arteries.

7. Which blood vessels contain one-way valves to stop the blood from travelling backwards?
A. Capillaries.
B. Veins.
C. Arteries.

8. What is blood pressure?
A. The amount of pressure exerted on blood vessel walls as the blood is pumped around.
B. The ratio of oxygen to carbon dioxide within the blood.
C. The concentration of red blood cells within the blood.

Your score is:

Score 0 to 2:
You need to improve your knowledge!

Score 3 to 5:
You have a general idea, but your circulatory system is still a bit of a mystery to you.

Score 6 to 8: Congratulations, you show an impressive understanding of the circulatory system.

> Check the correct answers.

You might also be interested in:
Circulatory system.
Heart explained.

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Baker IDI Heart and Diabetes Institute

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Last updated: August 2008

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