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WorksheetsCirculatory System
Total questions: 10
Worksheet time: 8mins
Name
Class
Date
1.
What is the circulatory system?
a)
The body's breathing system
b)
The body's system of nerves
c)
The body's food-processing system
d)
The body's blood-transporting system
2.
Why is oxygen important to blood and to the cells?
a)
Oxygen helps the blood to clot.
b)
Oxygen brings food to the cells.
c)
Oxygen is necessary for cell growth and energy.
d)
Oxygen is not important -- carbon dioxide is the most
important substance to the body.
important substance to the body.
3.
From what source do cells get their food?
a)
Blood
b)
Oxygen
c)
Other cells
d)
Carbon dioxide
4.
Which type of blood vessels carries blood away from the heart?
a)
Veins
b)
Arteries
c)
Capillaries
d)
Arteries, veins and capillaries
5.
Why is blood that flows from the lungs to the heart bright red rather than dark red?
a)
Oxygen makes it red.
b)
Carbon dioxide makes it red.
c)
Gastric juices produce the red colour of the blood.
d)
The lungs add a pigment (dye) to blood as it flows
through them.
through them.
6.
What part of the blood carries minerals, vitamins, sugar, and other foods to the body's cells?
a)
Plasma
b)
Platelets
c)
Red corpuscles
d)
White corpuscles
7.
What is the main job of the red corpuscles in the blood?
a)
To clot blood
b)
To fight disease
c)
To transport oxygen to the body's cells
and carry away carbon dioxide from the cells
and carry away carbon dioxide from the cells
d)
To transport carbon dioxide to the body's cells and
carry away oxygen from the cells
carry away oxygen from the cells
8.
Which of the following can best be compared to soldiers?
a)
Lungs
b)
Capillaries
c)
Red blood cells
d)
White blood cells
9.
What would happen to people who have an open wound and whose blood did not clot naturally?
a)
They may bleed to death.
b)
Nothing. Clotting is not important.
c)
They would have to take regular doses of plasma.
d)
They would have to take regular doses of platelets.
10.
What is the function of the blood vessels and capillaries?
a)
They pump blood to the heart.
b)
They filter impurities from the blood.
c)
They carry blood to all parts of the body.
d)
hey carry messages from the brain to the muscles.
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