It's lined with mucous and helps regulate pressure around the eardrum so that sound waves can be transferred. Ears can vary, so what's considered normal anatomy of the inner or outer ear in one person ...

Here, through photography and illustration, we explore a divided nation’s reactions to winning, losing and the future. Photo Editors: Adrian Lam, Anthony Correia, Claudia Hernandez, Elise ...

To accurately reflect our sources, this article uses terms like “male," “man,” and "female" as the sources use them. Anatomy of the Testes Most males are born with two testes (testicles). These are ...

Please note that audiobooks and ebooks purchased from this site must be accessed on the Princeton University Press app. After you make your purchase, you will receive ...