The Oral Cavity and the 

International Phonetic Alphabet

The Oral Cavity, from Gray's Anatomy

The International Phonetic Alphabet, as reproduced below, is from Wikipedia.  For a slightly more legible version, with additional information, visit this link: OMNIGLOT'S IPA

Image Credits:

The Oral Cavity, from Gray's Anatomy:

Courtesy Bartleby.com: http://www.bartleby.com/107/242.html

The International Phonetic Alphabet:

http://upload.wikimedia.org/wikipedia/en/1/15/IPA_chart_2005.png