Yesterday garner was reading about the human nervous system. he knew it was a communication network that conveys messages throughout the body, but he did not realize it was made up of as many as 100 billion _____.

The answer is neurons.

The nervous system is a network that made by neurons. Neurons have a feet-like organelle called axons that connect them with each other. These allow the brain to be connected with a muscle or any organ that located far away. The connection need many cells which makes them have a high cell count.