An educational look at your brain

The Alzheimer's Association offers this 16-slide educational tour of the brain.

It's worth checking out.

How else would you know how much your brain weighs? (3 pounds.)

Or what percentage of your body's fuel and oxygen your brain uses when you think hard? (Up to 50 percent.)

Or the chief type of cell that Alzheimer's destroys? (Neurons, or nerve cells.) Turns out, the adult brain contains about 100 billion of these, with branches that connect at more than 100 trillion points. Scientists call this dense, branching network--pictured above--a "neuron forest."