Google's Body Browser is a Google Earth for Human Physiology

http://www.zygotebody.com/

http://www.popsci.com/science/article/2010-12/googles-body-browser-g-maps-human-physiology

Zygote 3D Human Anatomy - The Wonder of Human Life at Your Fingertips

Zygote is the company behind the amazing 3D anatomical atlas Google Body™ available on the web and Android devices. Zygote says that they are committed to supporting the Google Body™ community through Zygote Body™. Visit ZygoteBody.com

They have mapped just about every traffic artery you could ever want to locate on Google Maps, but what if the thruway you're looking for isn't on any road atlas? To help you tell your axillary artery from your common carotid, they have created a G-Maps-like search-able guide for the human body that lets you zoom, scroll, and search for every muscle, gland, nerve, bone, or organ in our common physiology.

As far as handy Web apps go, Body Browser is pretty neat; a sliding scroll bar allows you to peel away layers of the body, starting at the skin and moving down through the muscles and bone/organs to the cardiovascular and nervous systems. It allows you to zoom in tight (with nice resolution) to get the name of a specific bodily bit. Clicking on anything produces a handy label that identifies what you're looking at.