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Questions and Answers
What is the function of alveoli in the lungs?
What is the function of alveoli in the lungs?
- To absorb carbon dioxide from the cells
- To provide a surface for the exchange of gases (correct)
- To transport oxygen to all cells in the body
- To filter out impurities from the air
Where is the respiratory pigment haemoglobin found in human beings?
Where is the respiratory pigment haemoglobin found in human beings?
- In the alveoli
- In the lungs
- In the red blood cells (correct)
- In the muscle tissues
Why does air get sucked into the lungs when we breathe in?
Why does air get sucked into the lungs when we breathe in?
- By the action of the alveoli
- Due to the compression of the chest cavity
- Because of the contraction of the diaphragm
- As a result of the expansion of the chest cavity (correct)
How is carbon dioxide mostly transported in our blood?
How is carbon dioxide mostly transported in our blood?
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Why do large animals rely on respiratory pigments for oxygen delivery?
Why do large animals rely on respiratory pigments for oxygen delivery?
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What is the purpose of the residual volume of air always present in the lungs?
What is the purpose of the residual volume of air always present in the lungs?
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