Especially when stressed or anxious I notice people have to take a deep breath. People also do this when not stressed though. I notice dogs do this as well, they will be laying there breathing normally then take a deep breath.
2007-03-19 10:00:34 · 9 answers · asked by Ken 2 in Health ➔ Other - Health
We actually went over that in medical school, believe it or not. They're called "sigh" breaths. It's related to changes in the surface tension within alveoli, the little spherical air sacs in which gas exchange occurs. Typically, only part of the lung volume actually is ventilated, and the unventilated portions continue not to have their alveoli expanded. Surface tension (force per unit area) is higher in a small sphere than a larger one, and this causes the unventilated alveoli to shrink further. To prevent collapse of aoveoli (known as atelectasis if it occurs on a large scale), a deep breath will expand them all. ..... So that's the purpose of a sigh breath. But what is the mechanism that tells your brainstem to take a deep breath? We talked about stretch receptors in the chest wall. These like to be stretched occasionally, and lack of stretching leads to wanting to take a breath. Supposedly, it's one of the top reasons for why it's hard to hold your breath for a long time.
2007-03-19 10:59:15 · answer #1 · answered by Erik A 2 · 2⤊ 0⤋
Involuntary Deep Breaths
2016-12-29 17:30:58 · answer #2 · answered by Anonymous · 0⤊ 0⤋
Involuntary Breathing
2016-11-12 03:08:09 · answer #3 · answered by Anonymous · 0⤊ 0⤋
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RE:
What causes the involuntary urge to take a deep breath?
Especially when stressed or anxious I notice people have to take a deep breath. People also do this when not stressed though. I notice dogs do this as well, they will be laying there breathing normally then take a deep breath.
2015-08-07 04:26:08 · answer #4 · answered by Bernetta 1 · 0⤊ 0⤋
I can't be positive but I herd once that you take those deep breaths for the same reason that you yawn, It stretches your lungs out and man does it feel good!
2007-03-19 10:10:19 · answer #5 · answered by Aj H 2 · 0⤊ 0⤋
Yes I always wondered this myself..
My problem is that I take small breaths, almost you cant even hear them... And I exhale even more... So about once every few minutes Ill take a big breath... and recoop what I have exhaled...
2007-03-19 10:04:23 · answer #6 · answered by Anonymous · 0⤊ 0⤋
I am not sure, I bet a respiratory therapist would know best, however I think it possibly may be to " Blow off excess C02", thus keeping your normal oxygen, C02 and other levels WNL {within normal limits}.
2007-03-19 10:08:41 · answer #7 · answered by rer348 4 · 0⤊ 0⤋
lack of oxygen to the brain.one more split second and it would have been a yawn
2007-03-19 10:08:57 · answer #8 · answered by Dontugetit 3 · 0⤊ 0⤋
Your body regulatory system is acquiring more oxygen.
2007-03-19 10:08:40 · answer #9 · answered by Hans B 5 · 0⤊ 0⤋