As you learn anatomy, of course, the body is this highly complex three-dimensional structure. But we often look at representations of the body that are in 2 dimensions. So we often divide the body along 2 dimensional planes, and that's for dissection, imaging, diagrams, whatever. These planes by which we divide the body, we call anatomical planes, and we're going to have some very specific ways that we refer to them. Anatomical planes are just these imaginary lines used to divide the body. We're going to have 4 major planes that we're going to learn now. Three of them just cut along the x, y, and z axes, and then the fourth one is just a little bit of a wild card. So let's go through them now one by one. First up, we have the frontal plane. The frontal plane divides the anterior and posterior. So here we have an anatomical model and you can see the frontal plane kind of divides him, his front from his back. And you can remember the frontal plane because if you look at the plane, the frontal plane, you're looking at it from the front. The frontal plane shows the front.

Next, we're going to have a sagittal plane. The sagittal plane divides the left and right sides of the body. And if you look at this anatomical model in this diagram, you see that this plane is going sort of right down through his nose, front to back, separating his two sides. Now we're going to have 2 varieties of this sagittal plane. First, we have what we see in the diagram. That's a midsagittal plane. Midsagittal plane, that prefix mid, it goes through the midline, right through the nose, right through the belly button, etc. Now if it's not on that midline, you have a parasagittal plane. So a parasagittal plane divides the body left and right, but not in perfect halves. So we just say here, not on the midline. Now our way to remember a sagittal plane, a sagittal plane separates the sides of the body. And if you're to look at a sagittal pl