Tissue Nervous tissue is responsible for carrying out all the informational signaling in our bodies. Our sensory systems all provide information to our brains via nervous system cells as well. Neurons are the electrically active, signaling cells of the nervous system. Glia are the support cells, and they have many, many other functions that we will discuss when we get to the nervous system. The cell's axon can not be distinguished from its dendrites in the micrograph.
B marks the axon and dendrite threads.
However, nervous tissue can still be considered vascularized. Once they die, they can thus never be replaced. The glia are able to reproduce, but cannot take over the functions of neurons. Although when one looks at nervous tissue it looks like there are a lot of spaces where extracellular material could be present, that is NOT the case.