Most of us, when at rest, breathe
through our nose. It’s ideally the proper way since less effort is
exerted and it is involuntary. Our nose acts as a filter, heater, and
humidifier for incoming air. When breathing through our mouth
however, the previous modifications to the air occur less as they
enter our lungs. Our lungs are still capable of inhaling colder,
drier, and dirtier hair; but you may notice that breathing really
cold, dry, and dirty air can be uncomfortable. So naturally, our
bodies prefer to breathe through our nose whenever possible.
The nasal cavity is made up of two
parallel passages, one on each side. These passages are separated by
the septum, the wall in their middle. It is a relatively flat wall of
cartilage, lining tissue, and bone. On the lateral side of the
passages, there are three nasal turbinates, which are long
cylindrical-shaped structures lying parallel to the floor of the
nose. The turbinates in the nose contains plenty of small blood
vessels that regulates blood flows as its functions. When the blood
vessels in the turbinate increases in size, the whole turbinate
swells as well, this results to decrease in airflow. It is a vice
versa process.
Everyone has a nasal cycle that allows
each side of the nostrils to do most of the work 2-6 hours each time.
For example, when the right turbinate is swollen, the left nasal
passage will mostly do the work. When the left sides swell, it will
shift the work to the right side. This cycle can be observed whenever
a cold occurs and a stuffy nose is present. They can also react to
allergic reactions or external stimuli, such as dirt or cold air.