This is a quiz about the circulatory and respiratory systems.
Your brain
Natural Pacemaker
Muscles in your heart
Trachea
Epiglottis in your heart
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Smallest of the blood vessels, highways of the circulatory system, bring nutrients and CO2 to tissues
Largest of the blood vessels, side streets of the circulatory system, bring CO2 to tissues and absorb O2
Smallest of the blood vessels, side streets of the circulatory system, bring CO2 to tissues and absorb O2
Smallest of the blood vessels, side streets of the circulatory system, bring nutrients and O2 to tissues and absorb CO2 and waste
Largest of the blood vessels, same as a vein, only females have them
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Vein
Artery
Capillary
Chamber of your heart
Part of your lungs
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