SCIENCE
RESPIRATION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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The lungs
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The skin
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The large intestine
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The kidneys
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Detailed explanation-1: -In the human body, carbon dioxide is formed intracellularly as a byproduct of metabolism. CO2 is transported in the bloodstream to the lungs where it is ultimately removed from the body through exhalation.
Detailed explanation-2: -Once in the lungs, oxygen is moved into the bloodstream and carried through your body. At each cell in your body, oxygen is exchanged for a waste gas called carbon dioxide. Your bloodstream then carries this waste gas back to the lungs where it is removed from the bloodstream and then exhaled.
Detailed explanation-3: -The volume of air inspired or expired during normal respiration is defined as the tidal volume. The average tidal volume of a healthy human being is 500mL/min. Thus, the amount of carbon-di-oxide given out is 500mL/min.
Detailed explanation-4: -The average human exhales about 2.3 pounds of carbon dioxide on an average day. (The exact quantity depends on your activity level-a person engaged in vigorous exercise produces up to eight times as much CO2 as his sedentary brethren.)