Intrauteran fluid and mucus.
mucus
mucus- mucus in the lungs makes breathing difficult
the function of the mucus blanket in the lungs is to filter and moisten the air.
There is water in your lungs. The moment you breathe in, the heat of your body mixed with the amount of mucus coating the inside of your lungs lets some of the water evaporate into the inhalation.
Your lungs are the reasons you body has Oxygen. In your lungs, we do produce mucus, which we cough up because of the cilia in our lungs. Smoking causes this cilia to not move the mucus out of your lungs which in turn causes problems.
Mucus
yes lungs can get blocked by mucus if tha is what you mean :)
Well one of the answers i know of is that your mucus coats the inside of your stomach preventing your stomach acids from eating through your body.
The hairs and the mucus inside the nose trap and collect dust, bugs and other debris and prevent it from entering the lungs.
It can cause a buildup of phlegm and mucus in the airways, but not in the lungs.
Mucus helps in trapping pathogenic microorganisms and dust particles and prevent them from entering inside the lungs, second it keep respiratory tract moist so that friction is reduced. Another function of Mucus is to regulate the temprature of the inhaled air.