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Quiz von Alexandra Bozan, aktualisiert more than 1 year ago
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Erstellt von Alexandra Bozan
vor etwa 8 Jahre
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Frage 1
Frage
If oxygen is 21% of the atmosphere, it will contribute [blank_start]21%[blank_end] of the total atmospheric pressure.
Antworten
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21%
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79%
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0.21%
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0.79%
Frage 2
Frage
The amount of oxygen that diffuses into blood each minute depends on the
Antworten
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total functional surface area of the respiratory membrane
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respiratory minute volume
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alveolar ventilation
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all of the above
Frage 3
Frage
Po2 at standard atmosphere pressure is approximately
Antworten
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21 mm Hg
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0.2 mm Hg
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160 mm Hg
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760 mm Hg
Frage 4
Frage
Anything that decreases the total functional surface are of the respiratory membrane
Antworten
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tends to decrease oxygen diffusion into the blood
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tends to increase oxygen diffusion into the blood
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has little effect on oxygen diffusion
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increases the humidity of oxygen as it diffuses
Frage 5
Frage
Partial pressure and tension can be used interchangeably
Antworten
- True
- False
Frage 6
Frage
The diameter of the pulmonary capillaries allows red blood cells to travel through at 10 abreast
Antworten
- True
- False
Frage 7
Frage
Nitrogen is the gas of greatest concentration in atmospheric air
Antworten
- True
- False
Frage 8
Frage
Oxygen is carried in blood
Antworten
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as oxyhemoglobin
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dissolved in plasma
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molecularly as HbO2
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all of the above
Frage 9
Frage
Which of the following is not a manner in which CO2 is transported in the blood
Antworten
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dissolved in plasma
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bound to the heme group of the hemoglobin
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as bicarbonate ions
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bound to the polypeptide chairs of hemoglobin
Frage 10
Frage
Increasing the carbon dioxide content of blood results in
Antworten
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a. increased H+ concentration of plasma
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b. decreased blood pH
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c. increased blood pH
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d. both a and b
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e. both a and c
Frage 11
Frage
Approximately 97% of oxygen is transported as [blank_start]oxyhemoglobin[blank_end], whereas the remaining 3% is transported dissolved in [blank_start]plasma[blank_end].
Antworten
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oxyhemoglobin
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plasma
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bicarbonate ion
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plasma
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hemoglobin
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bicarbonate ion
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carbonic acid
Frage 12
Frage
The exact amount of oxygen in blood depends mainly upon the amount of hemoglobin present.
Antworten
- True
- False
Frage 13
Frage
As plasma Pco2 increases, the CO2 carrying capacity of blood decreases
Antworten
- True
- False
Frage 14
Frage
Interstitial fluid PO2 and intracellular fluid PO2 are essentially the same
Antworten
- True
- False
Frage 15
Frage
A right shift of the oxygen-hemoglobin dissociation curve due to increased PCO2 is known as the Bohr effect
Antworten
- True
- False
Frage 16
Frage
Carbaminohemoglobin is formed when [blank_start]carbon dioxide[blank_end] binds to hemoglobin.
Antworten
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carbon dioxide
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oxygen
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amino acids
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nitrogen
Frage 17
Frage
Most of the oxygen transported by the blood is
Antworten
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dissolved to white blood cells
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bound to white blood cells
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bound to hemoglobin
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bound to cabaminohemoglobin
Frage 18
Frage
The increased total CO2 loading caused by a decrease in PO2 is a phenomenon knows as the
Antworten
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Haldane effect
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Bohr effect
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Boyle effect
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Dalton effect
Frage 19
Frage
Fick's law
Antworten
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describes the formation of oxyhemoglobin
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describes the diffusion of carbon dioxide and oxygen across the respiratory membrane
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describes the principle that states that a gas's volume is inversely proportional to its pressure
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states that volume is directly proportional to temperature when pressure is held constant
Frage 20
Frage
Which of the following is true regarding the diffusion of oxygen from the alveolar air into the blood in lung capillaries?
Antworten
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the walls of the alveoli and the capillaries together form a very thin barrier for the gases to cross
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alveolar and capillary surfaces are both extremely large
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lung capillaries accommodate a large amount of blood at one time
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all of the above are true
Frage 21
Frage
Gases
Antworten
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move in both directions through the respiratory membrane
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cause a decrease in acidity or an increase in pH in the blood when there is an increase in carbon dioxide
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enter and leave the internal environment by osmosis
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none of the above
Frage 22
Frage
Oxygen travels in two forms: as dissolved O2 in the [blank_start]plasma[blank_end] and as O2 associated with [blank_start]hemoglobin[blank_end].
Antworten
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plasma
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hemoglobin
Frage 23
Frage
The compound formed when carbon dioxide combines with hemoglobin is [blank_start]carbaminohemoglobin[blank_end].
Antworten
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carbaminohemoglobin
Frage 24
Frage
According to the rate of law of chemistry, as more CO2 is added to the plasma, more will be converted to [blank_start]carbonic[blank_end] [blank_start]acid[blank_end].
Antworten
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carbonic
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acid
Frage 25
Frage
[blank_start]Carbon[blank_end] [blank_start]monoxide[blank_end] binds to hemoglobin more than 200 times more strongly than oxygen.
Antworten
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Carbon
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monoxide
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