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by BlastRoom
What the diaphragm and ribs do on each breath, and what a spirometer measures.
#us_hs_anatomy_physiology
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During a quiet breath in, the diaphragm flattens and the rib cage lifts upward and outward. What happens to air pressure inside the lungs?
During a quiet breath out, the diaphragm relaxes upward and the ribs move down and inward. What pressure change helps push air out?
External intercostal muscles contract during inhalation. What movement do they produce?
At the start of inspiration, the diaphragm contracts. What happens to its shape and position?
During forced expiration, internal intercostal muscles contract. What action helps expel air?
A relaxed diaphragm moves upward during a quiet breath out. What happens to thoracic volume?
Thoracic volume increases during inspiration while the glottis is open. What follows next?
A spirometer records 500 mL moving in and out during one relaxed breath. Which volume has been measured?
A spirometer records an extra 3000 mL a subject can inhale after a normal quiet breath in. Which volume is this?
A spirometer records an extra 1100 mL a subject can force out after a normal quiet breath out. Which volume is this?
A lung-volume report lists 1200 mL of air still in the lungs after the strongest possible exhalation. Which volume is this?
After a maximal inhalation, a subject can exhale 4600 mL before no more air can be forced out. Which capacity is this?
After a normal quiet exhalation, 1100 mL can still be exhaled and 1200 mL remains. Which capacity equals that 2300 mL?
From the end of a normal quiet exhalation, a subject inhales 3500 mL to fill the lungs as much as possible. Which capacity is this?
Tidal volume is 500 mL, inspiratory reserve volume is 3000 mL, and expiratory reserve volume is 1100 mL. What is vital capacity?
Tidal volume is 450 mL and inspiratory reserve volume is 2500 mL. What is inspiratory capacity?
Expiratory reserve volume is 1000 mL and residual volume is 1200 mL. What is functional residual capacity?
Tidal volume is 500 mL, inspiratory reserve volume is 3000 mL, expiratory reserve volume is 1100 mL, and residual volume is 1200 mL. What is total lung capacity?
Tidal volume is 600 mL, expiratory reserve volume is 900 mL, and residual volume is 1300 mL. How much air remains after a normal quiet exhalation?
Vital capacity is 4800 mL and residual volume is 1200 mL. What is total lung capacity?
A wound opens the chest wall and air enters the space around one lung. What happens to that lung on the next inhalation?
In emphysema, alveolar walls lose elastic recoil. What change makes forced exhalation harder?
Severe asthma narrows bronchioles during expiration. What spirometer effect is expected during a forced breath out?
If the diaphragm is paralyzed and cannot contract, what happens to quiet inspiration?
Fractured ribs make a patient avoid lifting the rib cage during quiet breaths. What spirometer change would most likely appear?
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Asthma, COPD and Lung Disease
20 questions
