And then we've talked about this a little bit,
but we're gonna talk about it a little bit more where,
the elastic recoil of the airways is gonna be important.
So in diseases such as emphysema, where we have the reduced elastic tissue,
which means we have increased compliance.
But decreased recoil that can affect, since you've got less recoil by the lung,
that means that the intrapleural pressure is gonna be less negative.
You've got less of one of those forces, that is making it negative, and so
the airway diameter can be smaller, and the resistance can be higher.
So, if you don't have that recoil, then that can affect the airways,
and that's what we're gonna be talking about right now.
This is gonna be particularly prominent when
your really trying to force the air out quickly.
So for instance, if you're trying to exercise so
that you can get the air out quickly, and then quickly inhale.
And so you want to do a forced exhalation.
Force the air out quickly.