Those are called the Eustachian tubes.
No. The cochlea transmit sound from the eardrum. The Eustachian tubes keep the pressure inside the ear equalized with the external pressure.
The ear has a tube that equalizes the pressure in the eardrum. These tubes are known as the eustacean tubes.
The Eustachian tubes
The part of the ear that needs to be equalized during diving is called the Middle ear. The pressure in the outer ear will change with the pressure in the water you are diving through. Between the outer ear and the middle ear is the Tympanic Membrane, or "Eardrum", which will bend, when pressure in the outer ear and the middle ear isn't equal, causing umpleasantness or pain. This is countered by blowing air into the middle ear by what's called the Eustachian Tubes. By blowing extra air into the middle ear, the pressure inside the middle ear will increase, and since the Eardrum is the only flexible part of the middle ear, the increased pressure inside the middle ear, will cause the Eardrum to bend back to its original position. Hence, equalization...
Pressure in the middle ear is equalized through a part of the body called the
The placement of ventilation tubes (tympanostomy tubes) through the eardrum helps to provide ongoing drainage for fluid that may build up in the middle ear. These tubes equalize pressure and allow for ventilation, reducing the risk of ear infections and improving hearing.
Because as you dive down your eardrum is being stretched by the external pressure. If, when you first feel the discomfort, you hold your nose and blow out your ears, the pain will go way as you will then have equalized the pressures across the eardrum. SCUBA divers have to learn how to do this.
Eustachian tube.
If pressure is higher in the inside of the eardrum, the eardrum will pop. If pressure is higher outside the eardrum cave in.
Ear tubes can be inserted into the incision during myringotomy and left there. The eardrum heals around them, securing them in place. They usually fall out on their own in six to 12 months or are removed by a doctor.
The nasal cavity and inner ear are connected through the Eustachian tubes, small mucus-lined tubes that help to stabilized air pressure in the inner ear to prevent the eardrum from rupturing. When you fly and your ears "pop", it is the Eustachian tubes that have opened up to allow the air pressure in the inner ear to equilibrate with the ambient air pressure. The tongue is in the oral cavity, which communicates with the nasal cavity at the back of the throat.
In space, there is no air pressure to balance the pressure inside your ears. If the pressure inside your ear is significantly higher than the pressure outside, it can cause your eardrum to burst outwardly. This can happen if you hold your breath and strain, as the air in your lungs builds up pressure and pushes against the eardrum.