Neuronal Connections (IMAGE) University of Pennsylvania School of Medicine Caption Dendrites, which branch from the cell body (pink) of the neuron, play a key role in the communication between cells of the nervous system. Green dendrites contain the STREX form of the BKCa channels. Credit James Eberwine, Ph.D., University of Pennsylvania School of Medicine. Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.