How does your body work? is a nice resource for kids and parents.  The icons below are an example of the information on the KIDS section of this page- they are NOT links.  

Please go to this website directly to access all of this information-

How the Body WorksEN ESPAƑOL

How the body works activitieshair and healthy weightears and nosetongue and teethskin and bladderlungs and immune cellskidneys and nailsbones and endocrine glandseyes and liver