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17 Cards in this Set

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