Below is your chance to test your own knowledge blood-related topic. See how much you know about this essential fluid.

1. What is the primary function of blood?
a. To keep your blood warm.
b. To transport materials to and from body tissues
c. To stimulate the beating of your heart.

2. Blood consist of:
a. 100% red blood cells.
b. 60% red blood cells and 40% white blood cells.
c. 55% plasma and 45% formed elements.

3. Which tissues receive the most blood?
a. The most active tissues.
b. The tissues in your extremities (due to gravity).
c. All tissue receive the same amount of blood.

4. How is blood transported back to the heart?
a. Due to the heart`s magnetic properties.
b. When you lie down, gravity assists blood back to the heart.
c. Due to the use of valves and the pumping action of the muscles.

5. A mature red blood cell is called:
a. Erythrocyte
b. Haemoglobin
c. Plasma

6. Red blood cells have the ability to transport oxygen due to a substance knows as:
a. Hematorit
b. Haemoglobin
c. Immunoglobin

7. How many haemoglobin molecules are contained in each red blood cell?
a. 250
b. 250 thousand
c. 250 million

8. When donating blood there is approximately an 8-10% reduction in both the total blood volume and in the number of circulating red blood cells. How long does it take for these red blood cells to be reconstituted?
a. 48-72 hours
b. 2 weeks
c. 6 weeks

9. Blood viscosity refers to:
a. the color of blood
b. the temperature of blood
c. the thickness or stickness of blood

10. Which of the following nervous systems largely responsible for blood flow to all body parts?
a. Sympathetic nervous system
b. Parasympathetic nervous system
c. Central nervous system

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Answers:
1b. 2c. 3a. 4c. 5a. 6b. 7c. 8c. 9c. 10a.

Source: Fit Mag