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Human body

Quiz by Julekhabi Rajguru

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Q 1/5
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The circulatory system is composed of
29
The brain, the heart, and the blood vessels
The lungs, the blood, and the blood vessels.
The heart, blood, and blood vessels.
The heart, the brain, and the lungs.

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5 questions

Show answers

Q1
The circulatory system is composed of
The brain, the heart, and the blood vessels
The lungs, the blood, and the blood vessels.
The heart, blood, and blood vessels.
The heart, the brain, and the lungs.
30s
Q2
The heart is about the size of your...
Fist
Leg
Brain
Arm
30s
Q3
Why does blood turn dark red as it circulates through the body?
It starts to clot.
It gets old and dirty flowing through the body.
The oxygen in it is replaced with carbon dioxide.
The oxygen in it is replaced with carbon dioxide.
30s
Q4
Why is blood that flows from the lungs to the heart bright red rather than dark red?
Carbon dioxide makes it red.
Oxygen makes it red.
Gastric juices produce the red colour of the blood.
The lungs add a pigment (dye) to blood as it flows through them.
30s
Q5
Name the organ that is a muscle that pumps blood throughout the circulatory system.
stomach
heart
tongue
liver
30s

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