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Why percentage of nitrogen in inspired and expired air different?
Wiki User
∙ 11y ago
Nitrogen is an inert gas; that is it is not metobolised or produced by the body. In that case, the molar quantity inhaled must equal the molar quantity exhaled over a period of time. We can write this as VI x FI = VE x FE (where VI and VE are the inspired and expired volumes breathed over that time period, and FI and FE are the concentrations of N2 in the inspired and expired gas respectively).
However, the terms VI and VE are not equal because we generally consume more oxygen than we produce CO2 (i.e. our respiratory quotient is not 1), so we exhale a smidgin less gas than we inhale. So if VI does not equal VE, it follows that FI cannot equal FE.
Wiki User
∙ 11y ago
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Percentage of nitrogen in the expired air?
The percentage of expired air is around 74-80% Nitrogen. Because of gas exchange in the lung, expired air is also rich in CO2 and lower in O2 than atmospheric air (which has a 21.8% O2 comp and a .03 - .04% CO2 comp). Thus, the O2 and CO2 values narrow in difference to 14.5-16% and 4-5.5%, respectively.
How does expired air differ from inspired air?
Both Inspired and expired air have higher amounts of oxygen than Carbon Dioxide. Inspired air has higher amounts of oxygen than expired, while expired air has higher amounts of Carbon Dioxide than inspired air.
What is different between inspiration and expiration?
Expired means past use or dead. Inspired (inspire) means to be enlivened or filled with exalting emotion.
What percentage of oxygen is expired?
About 78%
What is the medical term meaning amount of air inspired and expired during normal breathing?
The medical term for the amount of air inspired and expired during normal breathing is tidal volume.
What does expired air contain?
Expired air is breathed out though the nose or mouth, in volume it normally consists of: 78.04% Nitrogen.
What gas is more abundant in exhaled air than inhaled air?
Nitrogen is the most abundant gas in the atmosphere ( ~ 80% ) and therefore is the dominant species in both inspired as well as expired air.
Why is less oxygen expired than inspired?
Because ts make your pennis get bigger.
What causes the drop in the amount of oxygen between inspired and expired air?
Modern
Why CO2 is more in alveolar air than expired air?
Alveolar air mixes with air in the anatomic dead space on its way, which is rich in oxygen. hence % of oxygen is more in expired air. Thus though amount of CO2 does not decrease, percentage decreases as inspired air contains very less amount of CO2 (0.03%).
What is the amount of air inspired and expired in normal respiration normal 500 mL and is known as the?
Tidal Volume
What is an anapnograph?
An anapnograph is a variety of spirometer, a device used to measure the volume of air inspired and expired by the lungs.
