Klarinet Archive - Posting 000174.txt from 1997/05

From: "Diane Karius, Ph.D." <dikarius@-----.edu>
Subj: Re: Air Temperature
Date: Tue, 6 May 1997 22:09:35 -0400

> Maybe you are assuming that one is breathing through a nose? The air is not
> fully warmed when breathing through your mouth by the time it reaches the
> trachea. You can test this by inhaling and exhaling quickly a volume of air
> greater than your anatomical dead space.
>
>
Actually, the assumption isn't bad for mouth breathing either unless
the ambient temperature is very cold. Measurements of the
temperature show that even with very cold air temperatures,
breathing through the nose always got the air up to BTPS (body temp.,
pressure, saturated) by the larynx. Mouth breathing was only
slightly slower, in that cold air (not room temperature) was slightly
below body temperature as it entered the layrnx (and was body temp.
after the larynx - i.e. as it entered the trachea). In terms of
warming the air, your mouth and larynx play the big roles.
Diane R. Karius, Ph.D.
Department of Physiology
University of Health Sciences
2105 Independence Ave.
Kansas City, MO 64124
email: dikarius@-----.EDU

   
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