Spit Isn't Gross; It's Critical

Spit Isn't Gross; It's Critical

When you think of spit you probably think "gross," "disgusting," "ew," etc. (Sure, using the word "spit" in place of saliva doesn't help.) Saliva gets a really bad rap, but in reality, it's hugely important. Try eating a dry food without any saliva or liquid in your mouth and you'll start to understand. Watch the videos below for the whole saliva story.

Everything You Never Wanted To Know About Spit

Try to imagine eating anything without spit.


5 Amazing Uses For Spit

Never thought you'd read "amazing" and "spit" in the same sentence?


How Does Saliva Work?

It's involved in a lot more than you think.


from Brain Stuff

Key Facts In This Video

  • 1

    Saliva is necessary to multiple bodily functions. (0:23)

  • 2

    Small bumps in our inner lips are actually saliva ducts. (1:24)

  • 3

    Saliva contains all of our genetic information. (2:20)

See all


Human Biology



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