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| {{Other uses2|Ventilation}}
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| In [[respiratory physiology]], '''ventilation''' is the movement of air between the environment and the [[lung]]s via [[inhalation]] and [[exhalation]]. Thus, for organisms with lungs, it is [[synonym]]ous with [[breathing]]. Ventilation usually happens in a rhythmic pattern, and the [[frequency]] of that pattern is called the [[ventilation rate]] (or, by long-standing convention, the [[respiratory rate]], even though in precise [[usage]] ''ventilation'' is a [[hyponymy|hyponym]], not a [[synonym]], of ''[[respiration (physiology)|respiration]]'').
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| Ventilation volumes and rates are categorized under the following definitions:
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| {| class="wikitable"
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| | '''Measurement''' || '''Symbol''' || '''Equation''' || '''Description'''
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| | ''[[Minute ventilation]]'' || <math> \dot{V}_E </math> || = [[tidal volume]] * [[respiratory rate]]<ref name="virginia">[http://www.healthsystem.virginia.edu/Internet/Anesthesiology-Elective/airway/ventilation.cfm Respiratory Physiology: Ventilation<!-- Bot generated title -->]</ref><ref>[http://www.nda.ox.ac.uk/wfsa/html/u12/u1211_02.htm Respiratory Physiology (page 2)<!-- Bot generated title -->]</ref> || the total volume of gas entering the lungs per minute.
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| |-
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| | ''[[Alveolar ventilation]]'' || <math> \dot{V}_A </math>|| = ([[tidal volume]] - [[dead space (physiology)|dead space]]) * [[respiratory rate]] <ref name="virginia"> </ref> || the volume of gas per unit time that reaches the [[alveolus|alveoli]], the respiratory portions of the lungs where gas exchange occurs.
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| | ''Dead space ventilation'' || <math> \dot{V}_D </math>|| = [[dead space (physiology)|dead space]] * [[respiratory rate]]<ref>{{GeorgiaPhysiology|4/4ch3/s4ch3_16}}</ref>
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| || is the volume of gas per unit time that does not reach these respiratory portions, but instead remains in the airways ([[Vertebrate trachea|trachea]], [[bronchi]], etc.).
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| |}
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| ==Sample values==
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| {| class="wikitable"
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| |-
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| ! Measure
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| ! Sample value at rest
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| ! Sample value moderate exercise<ref name="Int Panis">{{cite journal
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| | last = Int Panis
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| | first = L
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| | title = Exposure to particulate matter in traffic: A comparison of cyclists and car passengers
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| | journal = Atmospheric Environment
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| | volume = 44
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| | issue =
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| | pages = 2263–2270
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| | year = 2010
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| | url =
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| | doi = 10.1016/j.atmosenv.2010.04.028
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| | pmid =
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| | month =}}</ref>
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| |-
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| | [[Tidal volume]]
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| | 0.5 L
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| | 3.0 L
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| |-
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| | [[Respiratory rate]]
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| | 12 breaths/minute
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| | 30 breaths/minute
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| |-
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| | [[Respiratory minute volume|Minute ventilation]]
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| | 6.0 L/min
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| | 90 L/min
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| |-
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| | [[Dead space (physiology)|Dead space]]
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| | 0.15 L
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| | 0.15 L
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| |-
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| | Dead space ventilation
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| | 1.8 L/min
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| | 4.5 L/min
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| |-
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| | Alveolar ventilation
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| | 4.2 L/min
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| | 85.5 L/min
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| |-
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| | [[Functional residual capacity| Functional residual capacity (FRC)]]
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| | 2.5 L
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| | 2.5 L
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| |-
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| | [[Specific Ventilation| Specific Ventilation (Tidal volume / FRC)]]
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| | 0.2 L
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| |-
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| |}
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| Pulmonary ventilation may be evaluated using a breathing tube or [[spirometer]], measuring the movement of the chest and abdominal walls using [[respiratory inductance plethysmography]] or by isolating the subject in an enclosed metabolic chamber ([[body plethysmography]]).
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| == See also ==
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| *[[Gas exchange]]
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| *[[Fowler method]]
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| ==References==
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| {{reflist}}
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| ==External links==
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| * {{MeshName|Pulmonary+ventilation}}
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| *[http://www.rtcorner.net RT Corner (Educational Site for RT's and Nurses)] at rtcorner.net
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| {{Respiratory physiology}}
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| [[Category:Respiratory physiology]]
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| {{biology-stub}}
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Let me initial begin by introducing myself. My name is Boyd Butts even though it is not the title on my birth certification. What I love doing is performing ceramics but I haven't made a dime with it. Years in the past he moved to North Dakota and his family members loves it. Bookkeeping is her working day job now.
Look at my website; home std test; click the up coming internet site,