The nervous system has a strong connection to the gut microbiome. In fact, the gut microbiome has the largest concentration of neurotransmitters of any bodily area outside of what is conventionally understood as the nervous system, namely the brain and spinal cord.

The integumentary system consists of the skin, hair, and nails, which are united in their function of being the external-most layers of our bodies. But how do they differ?

Here, we have two engagement activities that the author, Daniel Lehewych, wrote for the childhood education company, Know Yourself, for the Nervous System.