Respiratory System

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  1. If the decrease of interpleural pressure by 5 cm H2O results in the increase of lung volume by 1 l the lung compliance is:
    a. Related to P/V
    b. Related to V/P
    c. 5 cm H2O/l
    d. 0.20 l/cm H2O
    • b. Related to V/P
    • d. 0.20 l/cm H2O
  2. Increase of CO2 content in the blood results in:
    a. Decrease of blood pH
    b. Increase of lung ventilation
    c. Carotid bodies activation
    d. Does not stimulate erythropoesis
    • a. Decrease of blood pH
    • b. Increase of lung ventilation
    • c. Carotid bodies activation
    • d. Does not stimulate erythropoesis
  3. Lung volume:
    a. Cannot be larger then vital capacity
    b. Increases usually with the increase of lung ventilation
    c. Increases because of the decrease of inspiratory reserve capacity
    d. Increases because of the decrease if exspiratory reserve capacity
    • a. Cannot be larger then vital capacity
    • b. Increases usually with the increase of lung ventilation
    • c. Increases because of the decrease of inspiratory reserve capacity
    • d. Increases because of the decrease if exspiratory reserve capacity
  4. The damage of vagus nerves results in:
    A. Increase of rate of breathing
    B. Respiratory failure
    C. Decrease of rate of breathing
    D. Rate of breathing is not affected
    E. The respiration is no more effected by blood gases concentration
    C. Decrease of rate of breathing
    (this multiple choice question has been scrambled)
  5. The shunt of 10% of blood from right heart ventricle to the left heart results in:
    A. Great change of Hb saturation and small change of PO2
    B. Pulmonary hypertension
    C. Increase of PO2 gradient between the alveolar air and arterial blood
    D. Increase of the V/Q ratio in the lungs
    E. Marcant hypercapnia
    C. Increase of PO2 gradient between the alveolar air and arterial blood
    (this multiple choice question has been scrambled)
  6. Because of the pattern of O2 dissociation curve of Hb:
    A. Alveolar PO2 is higher than 200 torr
    B. Maximum of O2 is transportend when alveolar PO2 changes from 120 torr to 70 torr
    C. The lung transport of CO2 inhibits partly the transport of O2 in the lungs
    D. Transport of O2 from the lung to the pulmonary capillaries is at alveolar PO2 higher then 70 torr affected by alveolar PO2 only in small extent
    D. Transport of O2 from the lung to the pulmonary capillaries is at alveolar PO2 higher then 70 torr affected by alveolar PO2 only in small extent
    (this multiple choice question has been scrambled)
  7. Alveolar pressure is:
    A. Related to the lung resistance and direction of air flow
    B. Subatmospheric at the end of inspirium
    C. Is related to the functional residual lung capacity only
    D. Subatmospheric during exspirium due to the lung compliance
    A. Related to the lung resistance and direction of air flow
    (this multiple choice question has been scrambled)
  8. Lung surfactant is:
    A. Restricts the diffusion properties in the lungs
    B. Prevents the areation of lungs in fetus
    C. Causes high work of breathing
    D. Decreases the lung compliance mainly in alveoli with low volume
    E. Solvent related to the soap used for the treatment of states with the high lung compliance
    D. Decreases the lung compliance mainly in alveoli with low volume
    (this multiple choice question has been scrambled)
  9. Generalized hypoventilation results in:
    A. Arterial hypercapnia
    B. Compensatory increase of lung blood flow
    C. Stimulation of carotid bodies by hypoxia
    D. Decrease of alveolar PO2 because of stimulation of breathing
    A. Arterial hypercapnia
    (this multiple choice question has been scrambled)
  10. Cutting of the carotic sinus nerves and vagal afferents to aortic arch results in:
    A. Increase of heart conductivity of impulses
    B. Cardiac failure
    C. Decrease of brain blood flow
    D. Loss of ability to regulate arterial pressure in the change from recumbent to upright position
    E. Decrease of arterial blood pressure in recumbent position
    D. Loss of ability to regulate arterial pressure in the change from recumbent to upright position
    (this multiple choice question has been scrambled)
  11. Alveolocapillary diffusion of CO2 is 20 times higher than diffusion of CO2 because:
    A. Content of CO2 in athmospheric air is smaller than content of O2
    B. Surface area accessible for CO2 is larger
    C. CO2 is actively transported
    D. CO2 is more soluble in water than O2
    E. Pressure gradient of CO2 is bigger than for O2
    D. CO2 is more soluble in water than O2
    (this multiple choice question has been scrambled)
  12. The most effective stimulus of ventilation is:
    A. PO2 in inspired air is reduced by 50%
    B. PCO2 in inspired air is reduced by 50%
    C. PO2 in inspired air is doubled
    D. PCO2 in inspired air is doubled
    E. A and D are equipotent stimuli
    D. PCO2 in inspired air is doubled
    (this multiple choice question has been scrambled)
  13. The increase of ventilation in mild exercise is not resulted from:
    A. Increase of blood pH
    B. Joints movement
    C. Increase of blood PCO2
    D. Decrease of blood pH
    E. Increase of body temperature
    A. Increase of blood pH
    (this multiple choice question has been scrambled)
  14. In the respiratory alkalosis:
    A. PCO2 increases
    B. Kidney the reabsorption of sodium is decreased
    C. Ventilation of lungs is decreased
    D. PCO2 decreases
    E. PCO2 is not changed
    D. PCO2 decreases
    (this multiple choice question has been scrambled)
  15. Destruction of pneumotaxic center in the pons results in:
    A. Apnoe
    B. Increase of the rate of breathing
    C. Respiratory arrest
    D. Apneustic breathing
    E. Vigorous breathing
    D. Apneustic breathing
    (this multiple choice question has been scrambled)
  16. Lung surfactant:
    a. Decreases the lung surface tension
    b. Enlarges alveoli
    c. Is more concentrated in exspirium
    d. Is better distributed in exspirium
    • a. Decreases the lung surface tension
    • c. Is more concentrated in exspirium
  17. Nonventilated part of the lungs results in.
    a. A-V shunt
    b. Increase of PCO2 in alveolar air
    c. Decrease of PO2 in alveolar air
    d. Increase of the dead space
    • a. A-V shunt
    • c. Decrease of PO2 in alveolar air
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302262
Card Set
Respiratory System
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Respiratory System
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