Do you have a question about how the body works? Ask it here and maybe the Nurb will answer! Who's the Nurb? He's the star of a new series of movies on KidsHealth.org

We'll choose a few lucky questions and feature them - along with Nurb's answers - on KidsHealth.org. And if your mom, dad or teacher says it's OK, they can submit a video of you asking your excellent question!

To participate, follow these directions:

Step 1: If you're not taking the survey with a teacher or in school, tell your parents you'd like to participate. If it's OK, move on to Step 2.

Step 2: Answer the questions below. If you are under age 13, the form allows you to provide your parent's email address. If you are under 13, please do not include your last name or your email address.

Step 3: Click "Done."

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