The Eustachian tube (tuba auditiva), also called "Eustachian tube", is the tube-like connecting passage between middle ear and nasopharyngeal space. It was named after its discoverer, the Italian doctor and anatomist Bartolomeo Eustachio (1524-1574). The external auditory meatus is closed on the inside by the sensitive and elastic skin of the eardrum. Behind it lies the middle ear, which is followed by the Eustachian tube.
Their length is about 3.75 centimeters. This continuous connection between the middle ear and throat area is responsible for the pressure balance between the ears, nose and the outside world (for example external air pressure) works.
Why sweets are often distributed on the plane
The Eustachian tube often reacts sensitively to changing pressure conditions. Normally, it opens by swallowing, chewing or yawning and thus provides, for example, in the plane or diving, for the important pressure balance in the middle ear.
This also explains why some airlines distribute chewing gum or sweets, especially on long-haul flights.
Flying does not do the cold well
If the Eustachian tube is clogged, for example by a cold, it can lead to earache and even injuries to the eardrum during a flight.
That's why you should be careful with a cold. In runny nose help nasal drops that bring the mucous membranes to decongestant.
Nevertheless, when a bad cold bites better in the sour (and healthier) apple and postpone the flight!