Lung Capacity notes.pdf - Mrs Stovel

- Extra air available with deep breathing during exercise.Air used when the body Is sitting or not very active.Extra air also used during deep breathing and exercise.This volume of air is always present, even after the deepestexpiration. It represents the air left in the tubes and corners ofihealveoli.2000 crn' 1 4 t I1 mwff//, (/// M17- 11100 crWThe volumes wili vary according to the size of the chest cavityof the individual being measured. The numbers given are fora young adult.Time

Lung Capacities and Volumes1. Inspiratory Reserve Volume/CapacityThe amount of air that can be forcibly inhaled, beyond the normal inhalation.Approx. 2000 ml in the average teenage male.2. Tidal VolumeThe amount of air you breath in or out while resting. Approx. 500 ml in theaverage teenage male.3. Expiratory Reserve Volume/CapacityThe amount of air that can be forcibly exhaled, beyond the normal exhalation.Approx. 1000 ml in the average teenage male.4. Residual/Reserve VolumeThe amount of air that cannot be pushed out of the lungs, even with the mostforceful exhalation. The residual air ensures that the air sacs remain partiallyinflated at all times. If the air sacs were to completely deflate, the wet tissues of theair sacs would stick to one another and the lungs would collapse. Approx. 1100 mlin the average teenage male.5. Vital/Total Lung CapacityThe maximum amount of air that can be inhaled or exhaled with the deepestpossible inhalation or exhalation. Approx. 3500 ml in the average teenage male.Factors Affecting Lung Capacityv Age - younger people have smaller capacity*:• Gender - males have larger capacity than females•:+ Body Mass - larger mass = larger capacity•3 Muscle Mass - larger mass = larger capacityv Aerobic Fitness - greater fitness = breathing large breaths on a frequent basis =larger capacity•:+ Diseases of the respiratory System• Asthma, bronchitis, colds, etc - narrower airways = less air takenin during inhalation = lungs don't stretch as much• Emphysema - air sacs become brittle and break so there are lessair sacs to hold air•:• Elevation where one resides - at higher elevations there is less oxygen, so atfirst, one has to breathe faster and deeper to get enough oxygen, and eventually,after several months, the lungs will stretch and the lung capacity will increase.

Lab: Measurin p Interc^retin ung apacitiMethod 1: sp lacernent Method C en stmAl nMethod 2 Res irometsr or 'i,p

Average Lung Capacities (Vital Capacities) for Males and FemalesAVERAGE' STANDARD DEVIATIONAGE MALE (c.c.) FEMALE (c.c.)4 700 8005 850 8006 1070 9807 1 G(1 1 1508 1500 13509 1700 15 O10 1950 174011 2200 195012 2540 215013 2900 235014 3250 248015 3600 270016 3900 270017 4100 275018 4200 280019 4„00 280020 4320 280021 4320 280022 * 4300 280023 4280 279024 4250 278025 4220 277026 4200 276027 4180 274028 4150 272029 4120 271030 4100 270031 ^35 3990 26,4036--40 3800 252041 45 3600 239046 ^`50 3410 225051"-55 3240 216056"-60 3100 2060