Why can the nose be blocked when catching a cold?

The changeable weather makes this winter even more sad. The cold wind from Siberia harassed our country from time to time. Wolves in the north are frozen into dogs in the south!

Do you sometimes succumb to this cold wind and accidentally get in close contact with Mr. Leng?

But have you ever wondered why your nose is blocked when you catch a cold? And usually only one is blocked?

In fact, this process is regulated by the "autonomic nervous system", which also regulates other body functions, such as digestion and heart rate. For the nose, the system regulates the "nasal circulation", so that even in the case of a cold, the function of each nostril is sound.

The panic of nasal congestion after a cold is due to congestion of nasal mucosa and the influence of gravity. One nostril in the lower position is heavily congested, and the other side will be unobstructed. This phenomenon will be particularly obvious when sleeping at night.

In addition, it is caused by the distribution of nasal mucus in multiple air-containing bone cavities around the nasal cavity-paranasal sinuses. There are four pairs of sinuses in the nasal cavity, and the maxillary sinus is located in the maxilla on both sides of the nasal cavity; The frontal sinus is in the frontal bone; The ethmoid sinus is located on both sides of the upper part of the nasal cavity and consists of many small cavities containing gas in the sieve tube. The sphenoid sinus is in the sphenoid bone behind the nasal cavity.

They all communicate with the nasal cavity through small openings. Sit down and lie down, assuming that the secretion is certain, then the nasal mucus will naturally flow from one sinus to the other due to gravity. Snuff is distributed in all nasal cavities, and the passage at the opening is blocked and not ventilated.

It is worth noting that most of the ventilation spray contains ephedrine, which can strongly contract capillaries, relieve congestion and edema of nasal mucosa and quickly ventilate. But these drugs are addictive, so be sure to use them according to the doctor's instructions.

Health is the capital of revolution, and health is king. Exercise and defend yourself! Exercise your muscles to prevent being beaten!

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