The best answer I've found on the same question is either a sinus infection or stagnation. The longer the mucus stays in your sinus cavities, the darker it can become. If it's accompanied by facial pain or headache, it's probably an infection needing attention (usually antibiotics although you can also try home remedies). If not, a netti pot or saline with lots of nose blowing is worth a try. The best answer I've found on the same question is either a sinus infection or stagnation. The longer the mucus stays in your sinus cavities, the darker it can become. If it's accompanied by facial pain or headache, it's probably an infection needing attention (usually antibiotics although you can also try home remedies). If not, a netti pot or saline with lots of nose blowing is worth a try.
The nasal passage is lined by a mucous membrane called the respiratory epithelium, which contains specialized cells that help trap particles and filter the air. This membrane also produces mucus to moisten and protect the nasal passages.
Clear nasal mucus or, "snot", is usually associated with allergies. If your nasal mucus is green or yellow you may have an infection and should see a doctor.
mucus helps prevent dust from going into your body. mucus stops that dust or other things that try to get in. that's why it is recommended to breath through your nose and not through the mouth when not necessary.
Your nostrils are your nasal passage
To prevent any substances like dust from getting in your brain, and to clean out your nasal passage of any substance.
SNOT !!
Nasal secretions are commonly referred to as "mucus" or "snot."
Mucus is a substance produced by the lining of the nasal cavity. This mucus helps moisten and filter incoming air.
The roll of a nasal passage and mouth is so you can breath in air.
Snot or boogers.
Mucus is a substance produced by the lining of the nasal cavity. This mucus helps moisten and filter incoming air.
Mucus is a substance produced by the lining of the nasal cavity. This mucus helps moisten and filter incoming air.