Mastering A&P Chapter 22 Lab
4
Which amount of surfactant resulted in the greatest amount of airflow? 4 2 0 Amounts 2 and 4 gave the same airflow.
Acute asthma attack plus inhaler
A normal FEV1% was seen with _______. emphysema acute asthma attack acute asthma attack plus inhaler emphysema, acute asthma attack and acute asthma attack plus inhaler
Bronchiole smooth muscle spasms
During an acute asthma attack, the obstruction is caused by _______. destruction of the walls of the alveoli a spasm of the diaphragm loss of elastic recoil bronchiole smooth muscle spasms
The internal intercostals contract
During forced exhalation, _______. the diaphragm, the internal intercostals and the external intercostals contract the internal intercostals contract the diaphragm contracts the external intercostals contract
It went from a negative number to zero and the pressure in the intrapleural cavity equalized with the atmospheric pressure
How did the pressure in the left intrapleural cavity change when the valve was opened? The pressure in the intrapleural cavity equalized with the atmospheric pressure. It went from a positive number to a negative number. It went from a positive number to a negative number and the pressure in the intrapleural cavity equalized with the atmospheric pressure. It went from a negative number to zero and the pressure in the intrapleural cavity equalized with the atmospheric pressure. It went from a negative number to zero.
It was cut in half
How did the total air flow in this trial differ from that in the previous trial in which the pleural cavities were intact? It did not change It was cut in half. It went to zero. It doubled in value.
Between the bell jar and the outer wall of the lung
In this activity, the pressure in the pleural cavity would be located _______. in the simulated lungs in the valve below the diaphragm between the bell jar and the outer wall of the lung
Calculated by multiplying the rate of respiration times TV
The minute ventilation is _______. the amount of air forcefully exhaled in 1 minute calculated by multiplying the rate of respiration times TV the amount of air forcefully inhaled in 1 minute the amount of air left in the lungs after 1 minute
Less than the pressure in the alveoli and less than atmospheric atmospheric pressure
The pressure in the pleural cavity is _______. greater than the pressure in the alveoli less than the pressure in the alveoli and less than atmospheric pressure less than atmospheric pressure greater than the pressure in the alveoli and less than atmospheric pressure less than the pressure in the alveoli
Intrapleural pressure
The pressure in the pleural cavity is called the _______. transpulmonary pressure interpleural pressure intrapulmonary pressure intrapleural pressure
75 - 85% of the vital capacity
Under normal conditions, the forced expiratory volume is normally _______. 75 - 85% of the total lung capacity 50 - 60% of the total lung capacity 75 - 85% of the vital capacity 50 - 60% of the vital capacity
TLC includes RV; C does not include RV
What is the difference between TLC and VC? VC includes RV; TLC does not include RV. VC includes TV; TLC does not include TV. TLC includes RV; VC does not include RV. TLC includes TV; VC does not include TV.
The pressure gradient
What is the driving force for the movement of air into the lungs? resistance generated in the blood vessels the pumping of the heart the pressure gradient the diffusion of gases
It flattens out
When the diaphragm contracts, _______. it lifts the rib cage it flattens out and it rises in the thoracic cavity it rises in the thoracic cavity it flattens out
Expiratory reserve volume decreased
When the radius of the airway was decreased, _______. residual volume decreased vital capacity increased residual volume decreased and expiratory reserve volume decreased tidal volume increased expiratory reserve volume decreased
Tidal volume
Which of the following describes the volume of air exhaled during passive breathing? expiratory reserve volume tidal volume plus residual volume tidal volume plus expiratory reserve volume tidal volume
Expiration
Which of the following is a passive process? inspiration expiration during exercise inspiration during exercise expiration
Emphysema and an acute asthma attack
Which of the following is(are) obstructive conditions? emphysema, an acute asthma attack and exercise an acute asthma attack emphysema emphysema and an acute asthma attack exercise
Moderate exercise
Which of the following resulted in an increase in tidal volume above the normal value? moderate exercise, acute asthma attack plus inhaler and emphysema emphysema moderate exercise acute asthma attack plus inhaler
Tidal volume, frequency of breathing and minute volume
Which of the following would increase with exercise? tidal volume and frequency of breathing tidal volume, frequency of breathing and minute volume minute volume frequency of breathing tidal volume
Respiratory muscles are relaxing and elastic tissue in the lungs recoils
Why is normal exhalation passive? The diaphragm is involuntarily controlled. Elastic tissue in the lungs recoils. Respiratory muscles are relaxing. Respiratory muscles are relaxing and elastic tissue in the lungs recoils.
RV
With an acute asthma attack, ________________ increased when compared to normal values. RV ERV TV FVC
Internal intercostals and abdominal muscles
With emphysema, the muscles that contract with normal exhalation include which of the following? abdominal muscles external intercostals and abdominal muscles internal intercostals and abdominal muscles internal intercostals external intercostals
The surface tension of the liquid in the alveoli would be greater and the alveoli would collapse
Without surfactant, _______. the alveoli would collapse the surface tension of the liquid in the alveoli would be greater the surface tension of the liquid in the alveoli would be less and the alveoli would collapse the surface tension of the liquid in the alveoli would be less the surface tension of the liquid in the alveoli would be greater and the alveoli would collapse