Nervous tissue is referred to as the primary tissue component of the nervous system. It can be found in the nerves, brain and spinal cord. Glial cells and neurons are the two types of cells that make up nervous tissue. Neurons are responsible for the communication and computation provided by the nervous system. Glial cells play a supporting role for nervous tissues and are considerably smaller than neurons. They enhance signal conduction within neurons and defend neurons from pathogens. Many body activities are controlled and coordinated by the nervous tissue. It develops environmental awareness, promotes muscle contraction and plays an important role in thinking, emotions and memory. The function of the nervous tissue is to create the communication network of the nervous system by conducting electric signals through the tissue. This book provides comprehensive insights on the role of nervous tissue cells in health and disease. It presents researches and studies performed by experts across the globe. The readers would gain knowledge that would broaden their perspective in this area of study.