The posterior communicating artery is located in the back of the head at the back end of the circle of Willis ... supply route to the brain in instances where the internal carotid or posterior ...

Rumer Willis' daughter Louetta just celebrated ... Her fans took to the comments to share their surprise at how much Lou looks like the Die Hard actor, with one writing, "I see so much of Bruce ...

The brain’s rules seem simple ... The receiving end, the dendrite, looks like the dense branches of a tree. These branches funnel electrical signals into the body of the cell. Another branch relays ...

Thanks to a mouse watching clips from "The Matrix," scientists have created the largest functional map of a brain to date—a diagram of the wiring connecting 84,000 neurons as they fire off messages.