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APHY 201 Exam 4a1
Ch. 16 Drills - Lung Capacities and Lung Volumes
| Question | Answer |
|---|---|
| What are the lung pressures like at rest? (compare atmospheric, intrapulmonary, and intrapleural) | At rest, intrapulmonary pressure is at atmospheric pressure and intrapleural pressure is slightly below atmospheric. |
| What happens to lung pressures during inspiration? (compare intrapulmonary, intrapleural to atmospheric) | Intrapulmonary pressure drops slightly below atmospheric pressure, and intrapleural pressure drops even further below it. |
| What happens to lung pressures during expiration? | Intrapulmonary pressure rises slightly above atmospheric pressure, while intrapleural pressure remains below atmospheric. |
| What is the term for the amount of air expired or inspired during quiet breathing, which is about 500mL? | tidal volume |
| What is the term for the maximum amount of air that can be forced out after a normal tidal volume expiration? | expiratory reserve volume |
| What is the term for the maximum amount of air that can be forced in after a normal tidal volume inspiration? | inspiratory reserve volume |
| What is the term for the amount of air left in the lungs after a maximum expiration that cannot be voluntarily expelled? | residual volume |
| What is the term for a measurement that consists of two or more lung volumes added together? | a lung capacity |
| What is term for the maximum amount of air that can be forcefully exhaled after a maximum inhalation? | vital capacity |
| What is the term for the total amount of gas in the lungs after a maximum inspiration, which is about 6L in a young adult male? | total lung capacity |
| What is term for the the maximum amount of gas that can be inspired after a normal tidal expiration? | inspiratory capacity |
| What is the term for the amount of gas remaining in the lungs after a normal tidal expiration? | functional residual capacity |
| How is vital capacity calculated? | Vital capacity is the sum of inspiratory reserve volume, expiratory reserve volume, and tidal volume. |
| How is functional residual capacity calculated? | Functional residual capacity is the sum of residual volume and expiratory reserve volume. |
| How is total lung capacity calculated? | Total lung capacity is the sum of residual volume, expiratory reserve volume, tidal volume, and inspiratory reserve volume. |
| How is total minute volume calculated? | Total minute volume is calculated by multiplying tidal volume by breaths per minute, averaging about 6L/min. |
Created by:
elianayu
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