Nasal mucosa has many roles and uses, mainly including: control of nasal ventilation, temperature regulation, humidity regulation, as well as filtering and cleaning.
1. Control of nasal ventilation: the volume of blood vessels in the mucosa of the inferior turbinate on both sides of the normal person is alternately contracted and dilated, which is manifested as the size of the turbinate on both sides of the nose and the resistance of the nasal cavity is correspondingly alternately changed. This change is about 2-6 hours to rotate 1 time, the total resistance of both sides of the nasal cavity remains unchanged.
2. Temperature regulation: When the outside air is inhaled into the nasal cavity, the blood vessels under the mucosa of the nasal cavity can be rapidly expanded or contracted with the change of the outside air temperature, thus changing the volume of the nasal cavity, accelerating or slowing down the airflow through the nasal cavity, which is then regulated to approximate the normal body temperature, in order to protect the lower respiratory tract from damage.
3. Regulate the role of humidity: nasal mucosa contains a large number of glands, can give a lot of water to the inhaled air to increase its humidity, in order to facilitate the gas exchange of alveoli and maintain the normal cilia movement of the respiratory mucosa. Air through the nasal cavity in the process, due to the rise in temperature, its volume due to the expansion, and therefore the amount of water absorption also increased.
4. Filtering and cleaning effect: the mucus blanket on the surface of the nasal mucosa can adsorb and dissolve small dust particles and bacteria and other foreign matter, with the cilia movement to the posterior nostrils, into the pharyngeal cavity, be spat out or swallowed. The sneeze reflex also removes dust and tiny foreign bodies that invade the nasal cavity.
Once nasal discomfort occurs, you can actively seek medical treatment for systematic examination, and the receiving doctor will give targeted answers based on the examination results.