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Biology. Tv videos and lectures. The Royal Society: Welcome. Search. Virtual Frog Dissection. Virtual Body. A Taste of Medicine - St Georges University of London. Power Planets Game: Powering the Future. Earthquakes. Mechanism of Urine Concentration. A major function of the kidney is conservation of water by increasing the solute concentration in the urine.

Mechanism of Urine Concentration

This is accomplished by the action of about a million nephrons working together with their attached collecting ducts. Although the process is much more complex than pictured here, it helps to understand the underlying concept if we break the process down into its three essential steps. It is important to realize that in reality, all three steps are going on at the same time. To the right of the animation is a complete set of controls, so that you can focus on any part of the process that you want. Click on the "Run" button to begin. Organize-It: Test Yourself on Biology Categories. The Scale of the Universe. ARTnatomía. Home. CSS Box Shadow & Text Shadow Experiments - ZURB Playground - ZURB.com.

The Scale of the Universe. Science Videos Search Engine. Profiler – create a topographic profile. Import file (KML, KMZ, GPX) loaded layer and topographic profile of the route.

Profiler – create a topographic profile

Sometimes, some files do not automatically create a profile! Zoom: 15Counter markers: 2Status: OKАzimuth: 73°Mouse px: ...Lat. AmMap: Interactive flash maps. Our JavaScript Maps is a tool that you can use to easily add interactive map functionality to your web pages and JavaScript-based applications.

amMap: Interactive flash maps

You can use this tool to show locations of your offices, routes of your journeys, create your distributor map, etc. Photos or illustrations can be used as layers and backgrounds of maps, so you can make different presentations, e-learning tools and more. Physics Flash Animations. We have been increasingly using Flash animations for illustrating Physics content.

Physics Flash Animations

This page provides access to those animations which may be of general interest. The animations will appear in a separate window. The animations are sorted by category, and the file size of each animation is included in the listing. Also included is the minimum version of the Flash player that is required; the player is available free from The categories are: