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2. Hearing protection device - Wikipedia

   en.wikipedia.org/wiki/Hearing_protection_device

   Ear cups are usually lined with a sound-absorbing material, such as foam. The cups should be fit so that the center of the ear canal aligns with the ear canal opening. [1] The soft cushions seal around the pinna of the ears. The head band, centered at the top of the head, applies force/pressure to seal the ear cups over the ears. [1]

3. Enlarged vestibular aqueduct - Wikipedia

   en.wikipedia.org/wiki/Enlarged_vestibular_aqueduct

   The vestibular aqueduct acts as a canal between the inner ear and the cranial cavity. Running through it is a tube called the endolymphatic duct, which normally carries a fluid called endolymph from the inner ear to the endolymphatic sac in the cranial cavity. When the endolymphatic duct and sac are larger than normal, as is the case in large ...

4. Macrotia - Wikipedia

   en.wikipedia.org/wiki/Macrotia

   Macrotia refers to an ear that is larger than would be expected. [1] The normal auricular axis length is 58–62 mm (2.3–2.4 in) among females and 62–66 mm (2.4–2.6 in) among males. [ 2 ] The average width of an adult ear, specifically the distance between the helix root (inner front edge) and the posterior auricle (outer front edge), is ...

5. Our tech writer's pick for best budget earbuds are 50% off ...

   www.aol.com/lifestyle/our-tech-writers-pick-for...

   Listen up: Our senior tech writer, Rick Broida, has spent the past two decades testing (and testing, and re-testing) hundreds of earbuds. So, when he's surprised by just how good a $40 pair ...

6. Earmuffs - Wikipedia

   en.wikipedia.org/wiki/Earmuffs

   Two people wearing behind-the-neck earmuffs. Thermal earmuffs are worn for protection from the cold. Because the ears extend from the sides of the head to gather sound waves, they have a high skin surface-area-to-volume ratio, and very little muscle tissue, causing them to be one of the first body parts to become uncomfortably cold as temperatures drop.

7. Eustachian tube - Wikipedia

   en.wikipedia.org/wiki/Eustachian_tube

   In humans and other tetrapods, both the middle ear and the ear canal are normally filled with air. Unlike the air of the ear canal, however, the air of the middle ear is not in direct contact with the atmosphere outside the body; thus, a pressure difference can develop between the atmospheric pressure of the ear canal and the middle ear.