PADI Divemaster Dive Theory Exam
Questions With Correct Answers
Dalton's Law - CORRECT ANSWER✔✔-Law of partial pressures
| | | | | | |
|The proportion of the total pressure exerted by a gas mixture that an
| | | | | | | | | | | | |
individual gas exerts is called PARTIAL PRESSURE
| | | | | |
Calculating Partial Pressure - CORRECT ANSWER✔✔-multiply the
| | | | | | |
percent of that gas by the absolute pressure
| | | | | | |
ex. P02 at 99 ft = .21 x 4 bar = .84 bar
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Henry's Law - CORRECT ANSWER✔✔-gas exchange law
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"the amount of gas that dissolves into a liquid at a given temperature is
| | | | | | | | | | | | | |
directly proportional to the partial pressure of that gas"
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What factors effect speed of gas dissolution in a liquid? - CORRECT
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ANSWER✔✔-1) pressure of the gas | | | |
2) amount already dissolved in the liquid
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3) solubility of the gas in the liquid
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, 4) SA where the gas and liquid make contact
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hemoglobin - CORRECT ANSWER✔✔-protein that binds reversibly with
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oxygen in the lungs (found in RBCs)
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gives up oxygen for the tissues to use
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where does gas exchange take place? - CORRECT ANSWER✔✔-
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capillaries - microscopic vessels between arteries and veins that thread
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through the tissues | |
Reflex respiratory center - what triggers the urge to breathe? - CORRECT
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ANSWER✔✔-The reflex respiratory center controls bretahing - high
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carbon dioxide NOT LOW OXYGEN stimulates urge to breathe
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dead air space: what and where? - CORRECT ANSWER✔✔-gas that
| | | | | | | | | |
remains in your sinuses, trachea and bronchi = dead air because it
| | | | | | | | | | | |
doesn't participate in gas exchange
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carotid sinus reflex/blocked jugular return - CORRECT ANSWER✔✔-tight
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hood or seal can constrict blood vessels
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blocked jugular impedes flow of oxygen- poor blood away from the
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brain --> causes raised blood pressure
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Questions With Correct Answers
Dalton's Law - CORRECT ANSWER✔✔-Law of partial pressures
| | | | | | |
|The proportion of the total pressure exerted by a gas mixture that an
| | | | | | | | | | | | |
individual gas exerts is called PARTIAL PRESSURE
| | | | | |
Calculating Partial Pressure - CORRECT ANSWER✔✔-multiply the
| | | | | | |
percent of that gas by the absolute pressure
| | | | | | |
ex. P02 at 99 ft = .21 x 4 bar = .84 bar
| | | | | | | | | | | |
Henry's Law - CORRECT ANSWER✔✔-gas exchange law
| | | | | |
"the amount of gas that dissolves into a liquid at a given temperature is
| | | | | | | | | | | | | |
directly proportional to the partial pressure of that gas"
| | | | | | | |
What factors effect speed of gas dissolution in a liquid? - CORRECT
| | | | | | | | | | | |
ANSWER✔✔-1) pressure of the gas | | | |
2) amount already dissolved in the liquid
| | | | | |
3) solubility of the gas in the liquid
| | | | | | | |
, 4) SA where the gas and liquid make contact
| | | | | | | |
hemoglobin - CORRECT ANSWER✔✔-protein that binds reversibly with
| | | | | | | |
oxygen in the lungs (found in RBCs)
| | | | | |
gives up oxygen for the tissues to use
| | | | | | |
where does gas exchange take place? - CORRECT ANSWER✔✔-
| | | | | | | |
capillaries - microscopic vessels between arteries and veins that thread
| | | | | | | | | |
through the tissues | |
Reflex respiratory center - what triggers the urge to breathe? - CORRECT
| | | | | | | | | | |
ANSWER✔✔-The reflex respiratory center controls bretahing - high
| | | | | | | | |
carbon dioxide NOT LOW OXYGEN stimulates urge to breathe
| | | | | | | |
dead air space: what and where? - CORRECT ANSWER✔✔-gas that
| | | | | | | | | |
remains in your sinuses, trachea and bronchi = dead air because it
| | | | | | | | | | | |
doesn't participate in gas exchange
| | | |
carotid sinus reflex/blocked jugular return - CORRECT ANSWER✔✔-tight
| | | | | | |
hood or seal can constrict blood vessels
| | | | | | |
blocked jugular impedes flow of oxygen- poor blood away from the
| | | | | | | | | | |
brain --> causes raised blood pressure
| | | | |
