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Answers |
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What percentage of oxygen is present in the air?
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21%. |
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What partial pressure does that represent at sea level?
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Answer |
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Questions |
Answers |
|---|---|
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What percentage of oxygen is present in the air?
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21%. |
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What partial pressure does that represent at sea level?
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Approximately 21 kPa (atmospheric pressure is 101.3 kPa). |
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What is the normal cardiac output at rest?
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Answer |
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Questions |
Answers |
|---|---|
|
What percentage of oxygen is present in the air?
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21%. |
|
What partial pressure does that represent at sea level?
|
Approximately 21 kPa (atmospheric pressure is 101.3 kPa). |
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What is the normal cardiac output at rest?
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Around 5 L/min (stroke volume 70 mL x rate 70 bpm). |
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How is an increase in cardiac output brought about?
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Questions |
Answers |
|---|---|
|
What percentage of oxygen is present in the air?
|
21%. |
|
What partial pressure does that represent at sea level?
|
Approximately 21 kPa (atmospheric pressure is 101.3 kPa). |
|
What is the normal cardiac output at rest?
|
Around 5 L/min (stroke volume 70 mL x rate 70 bpm). |
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How is an increase in cardiac output brought about?
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By an increase in both heart rate and stroke volume, driven mainly by the sympathetic nervous system. |
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What is the normal alveolar minute volume?
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Questions |
Answers |
|---|---|
|
What percentage of oxygen is present in the air?
|
21%. |
|
What partial pressure does that represent at sea level?
|
Approximately 21 kPa (atmospheric pressure is 101.3 kPa). |
|
What is the normal cardiac output at rest?
|
Around 5 L/min (stroke volume 70 mL x rate 70 bpm). |
|
How is an increase in cardiac output brought about?
|
By an increase in both heart rate and stroke volume, driven mainly by the sympathetic nervous system. |
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What is the normal alveolar minute volume?
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5 L/min (alveolar ventilation 350 mL x respiratory rate 14 breaths/min). |