PhysioEx Exercise 7

25 July 2022
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24 test answers

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question
The minute ventilation is _______.
answer
calculated by multiplying the rate of respiration times TV
question
Under normal conditions, the forced expiratory volume is normally _______.
answer
75 - 85% of the vital capacity
question
When the radius of the airway was decreased, _______.
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expiratory reserve volume decreased
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During forced exhalation, _______.
answer
the internal intercostals contract
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When the diaphragm contracts, _______.
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it flattens out
question
Which of the following is a passive process?
answer
expiration
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What is the driving force for the movement of air into the lungs?
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the pressure gradient
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Which of the following describes the volume of air exhaled during passive breathing?
answer
tidal volume
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What is the difference between TLC and VC?
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TLC includes RV.
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Which of the following is(are) obstructive conditions?
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emphysema and an acute asthma attack
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Which of the following resulted in an increase in tidal volume above the normal value?
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moderate exercise
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A normal FEV1% was seen with _______.
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acute asthma attack plus inhaler
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With an acute asthma attack, ________________ increased when compared to normal values.
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RV
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Why is normal exhalation passive?
answer
Respiratory muscles are relaxing and elastic tissue in the lungs recoils.
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With emphysema, the muscles that contract with normal exhalation include which of the following?
answer
internal intercostals and abdominal muscles
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During an acute asthma attack, the obstruction is caused by _______.
answer
bronchiole smooth muscle spasms
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Which of the following would increase with exercise?
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tidal volume, frequency of breathing and minute volume
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Which amount of surfactant resulted in the greatest amount of airflow?
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4
question
How did the pressure in the left intrapleural cavity change when the valve was opened?
answer
It went from a negative number to zero and the pressure in the intrapleural cavity equalized with the atmospheric pressure
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How did the total air flow in this trial differ from that in the previous trial in which the pleural cavities were intact?
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It was cut in half.
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Without surfactant, _______.
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the surface tension of the liquid in the alveoli would be greater and the alveoli would collapse
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The pressure in the pleural cavity is called the _______.
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intrapleural pressure
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The pressure in the pleural cavity is _______.
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less than the pressure in the alveoli and less than atmospheric pressure
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In this activity, the pressure in the pleural cavity would be located _______.
answer
between the bell jar and the outer wall of the lung