Podcast
Questions and Answers
What is the purpose of the diaphragm and muscles between your ribs in breathing?
What is the purpose of the diaphragm and muscles between your ribs in breathing?
- To transport nutrients to the alveoli
- To move air in and out of the lungs (correct)
- To filter oxygen from the air
- To pump blood to the lungs
Why do most organs sink in water but lungs float?
Why do most organs sink in water but lungs float?
- Because lungs are denser than other organs
- Because lungs have a lower surface area
- Because lungs are lighter due to air present in alveoli (correct)
- Because lungs contain more carbon dioxide
Where does gas exchange between air and blood take place, according to the text?
Where does gas exchange between air and blood take place, according to the text?
- In the capillaries around the heart
- In the trachea
- In the bronchi
- In the alveoli (correct)
Which blood vessels should be colored blue on diagrams, according to the text?
Which blood vessels should be colored blue on diagrams, according to the text?
Why does breathed-out air have less oxygen and more carbon dioxide than breathed-in air?
Why does breathed-out air have less oxygen and more carbon dioxide than breathed-in air?
What is the primary function of red blood cells in relation to the alveoli?
What is the primary function of red blood cells in relation to the alveoli?
What is the purpose of renewing the air in the lungs through breathing?
What is the purpose of renewing the air in the lungs through breathing?
Why do cells all over the body use oxygen during aerobic respiration?
Why do cells all over the body use oxygen during aerobic respiration?
How did Tom Sietas save oxygen by keeping very still?
How did Tom Sietas save oxygen by keeping very still?
What do muscle cells primarily use energy from respiration for?
What do muscle cells primarily use energy from respiration for?
Why is it important for gas exchange to occur as fast as possible between the alveoli and red blood cells?
Why is it important for gas exchange to occur as fast as possible between the alveoli and red blood cells?
What is the main reason Tom Sietas filled his lungs with pure oxygen before setting the breath-holding record?
What is the main reason Tom Sietas filled his lungs with pure oxygen before setting the breath-holding record?
Why did Tom Sietas keep totally still once he was in the water?
Why did Tom Sietas keep totally still once he was in the water?
How did the cold water contribute to Tom Sietas' ability to hold his breath for a long time?
How did the cold water contribute to Tom Sietas' ability to hold his breath for a long time?
Why does a lung full of pure oxygen supply more oxygen than a lung full of air?
Why does a lung full of pure oxygen supply more oxygen than a lung full of air?
What effect did sitting still have on Tom Sietas' respiratory rate?
What effect did sitting still have on Tom Sietas' respiratory rate?
Why did Tom Sietas avoid trying to break breath-holding records at home?
Why did Tom Sietas avoid trying to break breath-holding records at home?
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