1. First — wowza — this is what the nerves connected to your teeth look like: This is what all the nerves related to your teeth look like. from coolguides 2. And — yikes — this chart shows the black ...

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There are 118 elements on the period i c table, and you might think we are made up of many of them. But that's not the case; the complex systems that make up our bodies have a surprisingly simple ...

An organ is a group of tissues that work together to perform a specific task in the body, such as digesting nutrients or producing chemical messengers that enable brain cells to communicate. Although ...