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- Q2164998 subject Q7085841.
- Q2164998 subject Q7164958.
- Q2164998 subject Q7348358.
- Q2164998 subject Q8657583.
- Q2164998 subject Q8807917.
- Q2164998 abstract "In physiology, dead space is the volume of air which is inhaled that does not take part in the gas exchange, either because it (1) remains in the conducting airways, or (2) reaches alveoli that are not perfused or poorly perfused. In other words, not all the air in each breath is available for the exchange of oxygen and carbon dioxide. Mammals breathe in and out of their lungs, wasting that part of the inspiration which remains in the conducting airways where no gas exchange can occur.Benefits do accrue to a seemingly wasteful design for ventilation that includes dead space.Carbon dioxide is retained, making a bicarbonate-buffered blood and interstitium possible.Inspired air is brought to body temperature, increasing the affinity of hemoglobin for oxygen, improving O2 uptake.Particulate matter is trapped on the mucus that lines the conducting airways, allowing its removal by mucociliary transport.Inspired air is humidified, improving the quality of airway mucus.In humans, about a third of every resting breath has no change in O2 and CO2 levels. In adults, it is usually in the range of 150 mL.Dead space can be increased (and better envisioned) by breathing through a long tube, such as a snorkel. Even though one end of the snorkel is open to the air, when the wearer breathes in, they inhale a significant quantity of air that remained in the snorkel from the previous exhalation. Thus, a snorkel increases the person's dead space by adding even more "airway" that doesn't participate in gas exchange.".
- Q2164998 wikiPageExternalLink page16.htm.
- Q2164998 wikiPageExternalLink DeadSpace.HTML.
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- Q2164998 wikiPageWikiLink Q521.
- Q2164998 wikiPageWikiLink Q627.
- Q2164998 wikiPageWikiLink Q629.
- Q2164998 wikiPageWikiLink Q7085841.
- Q2164998 wikiPageWikiLink Q7102696.
- Q2164998 wikiPageWikiLink Q7164958.
- Q2164998 wikiPageWikiLink Q7348358.
- Q2164998 wikiPageWikiLink Q751856.
- Q2164998 wikiPageWikiLink Q754256.
- Q2164998 wikiPageWikiLink Q833565.
- Q2164998 wikiPageWikiLink Q8657583.
- Q2164998 wikiPageWikiLink Q8807917.
- Q2164998 wikiPageWikiLink Q9530.
- Q2164998 wikiPageWikiLink Q9635.
- Q2164998 comment "In physiology, dead space is the volume of air which is inhaled that does not take part in the gas exchange, either because it (1) remains in the conducting airways, or (2) reaches alveoli that are not perfused or poorly perfused. In other words, not all the air in each breath is available for the exchange of oxygen and carbon dioxide.".
- Q2164998 label "Dead space (physiology)".