Respiratory System Video Lessons

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Problem: When you hold your breath, which of the following blood gas changes first leads to the urge to breathe?a. rising O2b. falling O2c. rising CO2d. falling CO2

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Problem Details

When you hold your breath, which of the following blood gas changes first leads to the urge to breathe?

a. rising O2

b. falling O2

c. rising CO2

d. falling CO2

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