Sources

Sources

1. Encyclopædia Britannica
   

• "Vocal Cord." Encyclopædia Britannica. Encyclopædia Britannica Online School Edition. Encyclopædia Britannica, 2010. Web. 27  Apr.  2010. <http://school.eb.com/eb/article-9075627>.
  

• “Mucous Membrane." Encyclopædia Britannica. Encyclopædia Britannica Online School Edition. Encyclopædia Britannica, 2010. Web. 27  Apr.  2010. <http://school.eb.com/eb/article-9054122>
  

• "Respiration, Human." Encyclopædia Britannica. Encyclopædia Britannica Online School Edition. Encyclopædia Britannica, 2010. Web. 27  Apr.  2010. <http://school.eb.com/eb/article-66128>

2.  “Vocal Chord Anatomy and Movement” Essortment 2005.

   Web. April 27, 2010. <http://www.essortment.com/all/vocalchordanat_rzii.htm>

3. MedicineNet, Inc.
   

• “Definition of Voice Box” MedicineNet, Inc. 1996-2010.

Web. 27 Apr. 2010.. <http://www.medterms.com/script/main/art.asp?articlekey=9019>

• "Definition of Vocal Chord." MedicineNet, Inc. 1996-2010. Web. 27 Apr. 2010. <http://www.medterms.com/script/main/art.asp?articlekey=6003>.

4. “The Physics of Sound: How We Produce Sounds” The Yale-New Haven Teachers Institute 2010. Web. 26 Apr. 2010. <http://www.yale.edu/ynhti/curriculum/units/2003/4/03.04.04.x.html#d>

5. “Vocal Chord Disorders” Rector and Visitors of the University of Virginia 2010.

Web. 26 Apr. 2010.  <http://www.healthsystem.virginia.edu/uvahealth/adult_ent/vocal.cfm>

6. “Physics in Speech” School of Physics - The University of New South Wales (NSW). Web. 26 Apr. 2010. <http://www.phys.unsw.edu.au/phys_about/PHYSICS!/SPEECH_HELIUM/speech.htm>

    7. “Vocal Tract” The Free Dictionary by Farlex. Web. 21 May 2010.
< http://www.thefreedictionary.com/vocal+tract>