It contains the nucleus, shown in blue and it contains other organelles not shown. It also contains these extensions. And these extensions basically wrap around and connect to our neuron as well as blood vessels and they connect via gap junctions. So basically the oxygen and the nutrients such as our glucose that is traveling through our blood can actually get to the neuron via these astrocytes. On top of that, the astrocytes are also capable of actually providing physical support to the neurons and they maintain the nutrient and ion concentration in and around our neuron. So let's move on to the second type of glial cell in a central nervous system known as our appendomyl cell.