Quiz
Study Guide: Gas Exchange and Transport
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Perguntas do quiz (25)
1If oxygen is 21% of the atmosphere, it will contribute [blank_start]21%[blank_end] of the total atmospheric pressure.
- A21%
- B79%
- C0.21%
- D0.79%
2The amount of oxygen that diffuses into blood each minute depends on the
- Atotal functional surface area of the respiratory membrane
- Brespiratory minute volume
- Calveolar ventilation
- Dall of the above
3Po2 at standard atmosphere pressure is approximately
- A21 mm Hg
- B0.2 mm Hg
- C160 mm Hg
- D760 mm Hg
4Anything that decreases the total functional surface are of the respiratory membrane
- Atends to decrease oxygen diffusion into the blood
- Btends to increase oxygen diffusion into the blood
- Chas little effect on oxygen diffusion
- Dincreases the humidity of oxygen as it diffuses
5Partial pressure and tension can be used interchangeably
- AVerdadeiro
- BFalso
6The diameter of the pulmonary capillaries allows red blood cells to travel through at 10 abreast
- AVerdadeiro
- BFalso
7Nitrogen is the gas of greatest concentration in atmospheric air
- AVerdadeiro
- BFalso
8Oxygen is carried in blood
- Aas oxyhemoglobin
- Bdissolved in plasma
- Cmolecularly as HbO2
- Dall of the above
9Which of the following is not a manner in which CO2 is transported in the blood
- Adissolved in plasma
- Bbound to the heme group of the hemoglobin
- Cas bicarbonate ions
- Dbound to the polypeptide chairs of hemoglobin
10Increasing the carbon dioxide content of blood results in
- Aa. increased H+ concentration of plasma
- Bb. decreased blood pH
- Cc. increased blood pH
- Dd. both a and b
- Ee. both a and c
11Approximately 97% of oxygen is transported as [blank_start]oxyhemoglobin[blank_end], whereas the remaining 3% is transported dissolved in [blank_start]plasma[blank_end].
- Aoxyhemoglobin
- Bplasma
- Cbicarbonate ion
- Dplasma
- Ehemoglobin
- Fbicarbonate ion
- Gcarbonic acid
12The exact amount of oxygen in blood depends mainly upon the amount of hemoglobin present.
- AVerdadeiro
- BFalso
13As plasma Pco2 increases, the CO2 carrying capacity of blood decreases
- AVerdadeiro
- BFalso
14Interstitial fluid PO2 and intracellular fluid PO2 are essentially the same
- AVerdadeiro
- BFalso
15A right shift of the oxygen-hemoglobin dissociation curve due to increased PCO2 is known as the Bohr effect
- AVerdadeiro
- BFalso
16Carbaminohemoglobin is formed when [blank_start]carbon dioxide[blank_end] binds to hemoglobin.
- Acarbon dioxide
- Boxygen
- Camino acids
- Dnitrogen
17Most of the oxygen transported by the blood is
- Adissolved to white blood cells
- Bbound to white blood cells
- Cbound to hemoglobin
- Dbound to cabaminohemoglobin
18The increased total CO2 loading caused by a decrease in PO2 is a phenomenon knows as the
- AHaldane effect
- BBohr effect
- CBoyle effect
- DDalton effect
19Fick's law
- Adescribes the formation of oxyhemoglobin
- Bdescribes the diffusion of carbon dioxide and oxygen across the respiratory membrane
- Cdescribes the principle that states that a gas's volume is inversely proportional to its pressure
- Dstates that volume is directly proportional to temperature when pressure is held constant
20Which of the following is true regarding the diffusion of oxygen from the alveolar air into the blood in lung capillaries?
- Athe walls of the alveoli and the capillaries together form a very thin barrier for the gases to cross
- Balveolar and capillary surfaces are both extremely large
- Clung capillaries accommodate a large amount of blood at one time
- Dall of the above are true
21Gases
- Amove in both directions through the respiratory membrane
- Bcause a decrease in acidity or an increase in pH in the blood when there is an increase in carbon dioxide
- Center and leave the internal environment by osmosis
- Dnone of the above
22Oxygen travels in two forms: as dissolved O2 in the [blank_start]plasma[blank_end] and as O2 associated with [blank_start]hemoglobin[blank_end].
- Aplasma
- Bhemoglobin
23The compound formed when carbon dioxide combines with hemoglobin is [blank_start]carbaminohemoglobin[blank_end].
- Acarbaminohemoglobin
24According 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].
- Acarbonic
- Bacid
25[blank_start]Carbon[blank_end] [blank_start]monoxide[blank_end] binds to hemoglobin more than 200 times more strongly than oxygen.
- ACarbon
- Bmonoxide
Informações
- Descrição
- Study Guide: Gas Exchange and Transport
- Autor
- Alexandra Bozan
- Idioma
- English
- Visualizações
- 251
- Etiquetas
- Avaliação
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