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Science: Middle School: Grades 6, 7 and 8 Quiz - Circulatory System 1 (Questions)

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The heart pumps blood through our circulatory system so that all the cells can receive food and oxygen, and have carbon dioxide and waste removed.

Have you already learned about the circulatory system? Then test your knowledge in this Science quiz on the topic.

Which of the following is not part of the circulatory system?

[ ]	Arteries
[ ]	Capillaries
[ ]	Lungs
[ ]	Veins

Which of the following is not a function of the arteries?

[ ]	To carry blood away from the heart
[ ]	To carry blood into the heart
[ ]	To supply food to the cells
[ ]	To supply oxygen to the cells

Which of the following is not a function of the veins?

[ ]	To carry blood away from the heart
[ ]	To carry blood into the heart
[ ]	To carry carbon dioxide away from the cells
[ ]	To carry waste away from the cells

Which of the following statements about arteries is NOT true?

[ ]	Substances can pass through their walls
[ ]	They carry blood away from the heart
[ ]	They have a thick wall containing muscle
[ ]	They have no valves

Which of the following, about veins, is NOT true?

[ ]	Substances cannot pass through their walls
[ ]	They carry blood to the heart
[ ]	They have no valves
[ ]	They have thin walls

Which of the following, about capillaries, is NOT true?

[ ]	Substance exchange in cells and blood takes place here
[ ]	They are too small to see without a microscope
[ ]	They connect arteries to veins
[ ]	They have thick walls

Which of the following is not a component of blood?

[ ]	Plasma
[ ]	Plates
[ ]	Red blood cells
[ ]	White blood cells

The main organ in the circulatory system is the .......

[ ]	brain
[ ]	heart
[ ]	liver
[ ]	lungs

The veins from the body enter the heart with .......

[ ]	deoxygenated blood
[ ]	food
[ ]	oxygen
[ ]	oxygenated blood

10.

Which of the following is not true about the ventricles of the heart?

[ ]	They are the lower chambers of the heart
[ ]	They are the upper chambers of the heart
[ ]	They have more muscle than the atria
[ ]	They pump blood

Science: Middle School: Grades 6, 7 and 8 Quiz - Circulatory System 1 (Answers)

Which of the following is not part of the circulatory system?

[ ]	Arteries
[ ]	Capillaries
[x]	Lungs
[ ]	Veins

Which of the following is not a function of the arteries?

[ ]	To carry blood away from the heart
[x]	To carry blood into the heart
[ ]	To supply food to the cells
[ ]	To supply oxygen to the cells

Which of the following is not a function of the veins?

[x]	To carry blood away from the heart
[ ]	To carry blood into the heart
[ ]	To carry carbon dioxide away from the cells
[ ]	To carry waste away from the cells

Which of the following statements about arteries is NOT true?

[x]	Substances can pass through their walls
[ ]	They carry blood away from the heart
[ ]	They have a thick wall containing muscle
[ ]	They have no valves

No substances can pass through the artery wall

Which of the following, about veins, is NOT true?

[ ]	Substances cannot pass through their walls
[ ]	They carry blood to the heart
[x]	They have no valves
[ ]	They have thin walls

They have valves to prevent the backflow of blood

Which of the following, about capillaries, is NOT true?

[ ]	Substance exchange in cells and blood takes place here
[ ]	They are too small to see without a microscope
[ ]	They connect arteries to veins
[x]	They have thick walls

Their walls are only one cell thick

Which of the following is not a component of blood?

[ ]	Plasma
[x]	Plates
[ ]	Red blood cells
[ ]	White blood cells

Should be platelets

The main organ in the circulatory system is the .......

[ ]	brain
[x]	heart
[ ]	liver
[ ]	lungs

The veins from the body enter the heart with .......

[x]	deoxygenated blood
[ ]	food
[ ]	oxygen
[ ]	oxygenated blood

10.

Which of the following is not true about the ventricles of the heart?

[ ]	They are the lower chambers of the heart
[x]	They are the upper chambers of the heart
[ ]	They have more muscle than the atria
[ ]	They pump blood

The left ventricle is more muscular as it pumps blood all round the body, the right pumps blood to the lungs