For those who sometimes need to know a little more about anatomy:

http://www.innerbody.com/htm/body.html

About InnerBody:

Online since 1997, InnerBody is your go-to resource for accurate and easy-to-use information about human anatomy, exploring all systems of the human body. More than 10 million patients, students, and other inquisitive people visit their website each year. More than 200 high schools and community colleges integrate their content into their curriculum and use InnerBody as a fun, interactive alternative to expensive textbooks. InnerBody has received excellence awards from the likes of Popular Science, Homeschool.com, and other organizations dedicated to furthering education.