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17 Cards in this Set
- Front
- Back
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TV
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Tidal Volume: amount of air inhaled and exhaled during normal breathing cycle.
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IRV
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Inspiratory reserve volume: amount of air that can be inhaled over and above a tidal inspiration.
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ERV
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Expiratory reserve volume: amount of air that can be exhaled over and above a tidal expiration.
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RV
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Residual volume: amount of air remaining in the lungs after an ERV.
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VC
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VC = TV + IRV + ERV
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Inspiratory capacity
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= TV + IRV
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Functional reserve capacity
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= ERV + RV
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Total lung capacity
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= VC + RV
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Organs of the respiratory system
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nose, pharynx, larynx, trachea, bronchi, bronchioles, alveoli
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Another name for the larynx
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Voice box
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Number of lobes in the right lung
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3
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Number of lobes in the left lung
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2
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Minute ventilation
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Amount of air taken into or out of the lungs in one minute (= frequency * tidal volume).
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Muscles used in quiet breathing
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Inspiration: diaphragm, external intercostals
Expiration: passive |
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Muscles used in laboured breathing
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Inspiration: diaphragm, external intercostals, sternocleidomastoid, scalenes, pectoralis minor.
Expiration: internal intercostals, abdominals |
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Partial pressure
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The pressure a specific gas exerts within a mixture of gases.
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Area of the brain that controls breathing
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Respiratory centre of the medulla
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