Albright, Ann L. Adipose Tissue. 26 April 2005

      <http://www.sportsci.org/encyc/adipose/adipose.html>

American Academy of Otolaryngology - Head and NeckSurgery. Salivary Glands. 27 April 2005

      <http://www.entnet.org/healthinfo/throat/salivary.cfm>

American Lung Association. Your Lungs. 23 April 2005

      <http://www.lungusa.org/site/pp.asp?c=dvLUK9O0E&b=22551>

Artery and Vein Tissue. 27 April 2005

      <http://www.innerbody.com/image/card05.html>

Cartilage. 24 April 2005

      <http://www.botany.uwc.ac.za/sci_ed/grade10/mammal/cart.htm>

Columbia Encyclopedia, The. Muscle. 24 April 2005

      <http://www.bartleby.com/65/mu/muscle.html>

Infoplease. Trachea. 26 April 2005

     <http://www.infoplease.com/ce6/sci/A0849209.html>

Microsoft Encarta Online Encyclopedia. Lung. 23 April 2005

     <http://encarta.msn.com/encyclopedia_761570316/Lung.html>

O'Neil, Dennis. Blood Components. 23 April 2005

      <http://anthro.palomar.edu/blood/blood_components.htm>

Pituitary Network Association. Pituitary FAQs. 26 April 2005

      <http://www.pituitary.com/faq/>

Research Machines. Trachea. 26 April 2005

      <http://www.tiscali.co.uk/reference/encyclopaedia/hutchinson/m0006885.html>

Robert, Laura. Submaxillary Gland. 27 April 2005

      <http://bioisu2005.tripod.com/id20.html>

Smooth Muscle. 24 April 2005

      <http://www.innerbody.com/text/musc08.html>

Smooth Muscle. 24 April 2005

      <http://www.uic.edu/classes/phyb/phyb516/smoothmuscleu3.htm>

Spinal Cord, The. 24 April 2005.

      <http://faculty.washington.edu/chudler/spinal.html>

Testes. 23 April 2005

        <http://training.seer.cancer.gov/module_anatomy/unit12_2_repdt_male1testes.html>

Thyroid Foundation of Canada. The Thyroid Gland: A General Introduction. 27 April 2005

      <http://www.thyroid.ca/Guides/HG01.html>

University Of Washington. Spinal Cord. 24 April 2005

      <http://braininfo.rprc.washington.edu/Scripts/ancilcentraldirectory.aspx?ID=2>