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Middle School: 6th, 7th and 8th Grade
Science
The Human Circulatory System
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Q.1
Where does the heart pump oxygenated blood to?
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To the brain only
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To the lungs only
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To the digestive system only
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To the whole body
Q.2
The heart pumps blood to the lungs. What waste product is removed from the blood by the lungs?
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Oxygen
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Acid
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Carbon dioxide
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Urea
Q.3
The human circulatory system includes the heart, lungs and blood vessels. What is another name for the circulatory system ?
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The endocrine system
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The cardiovascular system
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The nervous system
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The digestive system
Q.4
Which are the thinnest and smallest blood vessels?
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Arteries
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Veins
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Capillaries
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None of the above
Q.5
What enters the blood from the lungs?
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Oxygen
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Acid
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Carbon dioxide
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Urea
Q.6
Which one of the following is part of the heart?
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Right ventilator
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Septum
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Right atrium
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Left ventricle
Q.7
Which blood vessels carry oxygenated blood?
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Arteries
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Veins
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Capillaries
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All of the above
Q.8
Blood delivers oxygen and what else to the cells in your body?
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Carbon dioxide
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Energy
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Essential nutrients
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Kind thoughts
Q.9
What is the easiest way to measure your heart rate?
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By seeing how many sit-ups you can do in 30 seconds
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By counting your breaths
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By listening to your heartbeats
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By checking your pulse rate
Q.10
Waste products must be removed before the blood returns to the heart. Which organs remove waste from the blood?
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The brain and spleen
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The liver and kidneys
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The skin and gall bladder
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The liver and spleen
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