Photo Attributions
All photographs by Andrew M. LaFleur, M.D. 2007.
Reproductive (male), By Unknown Illustrator [Public domain], via Wikimedia Commons. Image obtained on December 17, 2013.
Male_anatomy.png: alt.sex FAQ derivative work: Tsaitgaist (Male_anatomy.png) [GFDL (http://www.gnu.org/copyleft/fdl.html) or CC-BY-SA-3.0 (http://creativecommons.org/licenses/by-sa/3.0/)], via Wikimedia Commons.
Gray1146, [Public domain], via Wikimedia Commons. Image obtained on June 4, 2014.