Respiratory System

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Author:
Marine
ID:
302262
Filename:
Respiratory System
Updated:
2015-06-11 16:25:16
Tags:
physiology physio
Folders:
Physio
Description:
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. The respiration is no more effected by blood gases concentration
    B. Decrease of rate of breathing
    C. Rate of breathing is not affected
    D. Respiratory failure
    E. Increase of rate of breathing
    B. 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. Pulmonary hypertension
    B. Great change of Hb saturation and small change of PO2
    C. Marcant hypercapnia
    D. Increase of the V/Q ratio in the lungs
    E. Increase of PO2 gradient between the alveolar air and arterial blood
    E. 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. Subatmospheric at the end of inspirium
    B. Related to the lung resistance and direction of air flow
    C. Subatmospheric during exspirium due to the lung compliance
    D. Is related to the functional residual lung capacity only
    B. Related to the lung resistance and direction of air flow
    (this multiple choice question has been scrambled)
  8. Lung surfactant is:
    A. Solvent related to the soap used for the treatment of states with the high lung compliance
    B. Prevents the areation of lungs in fetus
    C. Causes high work of breathing
    D. Restricts the diffusion properties in the lungs
    E. Decreases the lung compliance mainly in alveoli with low volume
    E. 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. Decrease of alveolar PO2 because of stimulation of breathing
    C. Stimulation of carotid bodies by hypoxia
    D. Compensatory increase of lung blood flow
    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. Loss of ability to regulate arterial pressure in the change from recumbent to upright position
    C. Decrease of arterial blood pressure in recumbent position
    D. Decrease of brain blood flow
    E. Cardiac failure
    B. 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. CO2 is more soluble in water than O2
    B. Pressure gradient of CO2 is bigger than for O2
    C. CO2 is actively transported
    D. Content of CO2 in athmospheric air is smaller than content of O2
    E. Surface area accessible for CO2 is larger
    A. CO2 is more soluble in water than O2
    (this multiple choice question has been scrambled)
  12. The most effective stimulus of ventilation is:
    A. PCO2 in inspired air is doubled
    B. PCO2 in inspired air is reduced by 50%
    C. A and D are equipotent stimuli
    D. PO2 in inspired air is doubled
    E. PO2 in inspired air is reduced by 50%
    A. 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 PCO2
    B. Joints movement
    C. Increase of blood pH
    D. Increase of body temperature
    E. Decrease of blood pH
    C. Increase of blood pH
    (this multiple choice question has been scrambled)
  14. In the respiratory alkalosis:
    A. PCO2 decreases
    B. Ventilation of lungs is decreased
    C. PCO2 is not changed
    D. Kidney the reabsorption of sodium is decreased
    E. PCO2 increases
    A. PCO2 decreases
    (this multiple choice question has been scrambled)
  15. Destruction of pneumotaxic center in the pons results in:
    A. Respiratory arrest
    B. Increase of the rate of breathing
    C. Vigorous breathing
    D. Apnoe
    E. Apneustic breathing
    E. 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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