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Physiology- Respir.

the physiology of respiration

TermDefinition
quiet breathing the active contraction of the diaphragm for inspiration followed by passive expiration by elasticity and gravity
minute volume the volume of air involved in one minute of respiration (quiet breathing)
residual volume (RV) the volume of air remaining in the lungs after maximum exhalation
tidal volume (TV) the volume of air exchanged in one cycle of respiration
inspiratory reserve volume (IRV) the volume of air that can be inhaled after a tidal inspiration
expiratory reserve volume (ERV) the volume of air that can be expired following passive, tidal expiration; also know as resting lung volume
dead air the volume of air within the conducting passageways that cannot be involved in gas exchange (included as a component of residual volume)
vital capacity (VC) the volume of air that can be inhaled following a maximal exhalation; amount of air potential for speech production; includes inspiratory reserve volume, tidal volume, and expiratory reserve volume (VC = IRV + TV + ERV)
functional residual capacity (FRC) the volume of air in the body at the end of passive exhalation; inculdes expiratory reserve and residual volumes (FRC = ERV + RV)
inspiratory capacity (IC) the maximum inspiratory volume possible after tidal expiration (IC = TV + IRV)
total lung capacity (TLC) the sum of inspiratory reserve volume, tidal volume, expiratory reserve volume, and residual volume (TLC = IC + FRC)
subglottal pressure (Ps) pressure below vocal folds; glottis - opening between the vocal folds
intrapleural pressure (Ppl) pressure in space between parietal and visceral pleurae; always negative
3-5 cm water minimum driving pressure needed to make vocal folds move
7-10 cm water conversational speech
>10 cm water loud speech able to be produced
nonspeech respiration % 40% inhalation, 60% exhalation
speech production % 10% inhalation, 90% exhalation
checking action impeding the flow of air out of your inflated lungs by using the muscles of inspiration; lets the air out slowly
resting lung volume the amount of air in your lungs at the bottom of a passive expiration; 38% of vital capacity
wet spirometer measures respiratory flow, volumes, and capacities; jar inside water, inside a jar
U-tube Manometer method used to measure how much pressure a patient can generate
Created by: terriers16
 

 



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