 All right, so now we're going to look at the nervous system, okay? So the first thing we can notice this is a cross-section of the spinal cord So we can see that it composes of two different tissues. You have the white matter here So these are myelinated nerves the gray matter here, which is the unmyelinated nerves okay The first structure here so we can see that this is a very wide and deep structure called the anterior median fissure on the other side you have another Crack there, but it's not quite as wide. So it's not a fissure, but it's called the posterior sulcus Okay of my gray matter here So we've now know that this is the anterior side because that's where my anterior median fissure is so that makes this an An anterior horn of the gray matter. This is the These are both the anterior horns of the gray matter my posterior horns of the gray matter are on both sides there You can see the central canal just where your cerebral spinal fluid would sit the gray commissure connects the two sides You can also see my dorsal root Dorsal root leading into the dorsal root ganglion and my ventral root all leading to the spinal nerve