Okay, so let's look at the vertebrae themselves. Okay, so our cervical vertebrae, we have seven of these. We have twelve thoracic vertebrae and five lumbar vertebrae. So the common phrase for this is breakfast at seven, lunch at twelve, dinner at five. Okay, so remember seven, twelve, and five. Now the cervical vertebrae, the first two cervical vertebrae are kind of special. You have the atlas, which is C1, and the axis. So our atlas looks like this. So it's a very flattened. It's actually what articulates with the skull itself. Okay, so it has some of the main characteristics that we see on all the other vertebrae. So you can see the large hole here. So this is our vertebral frame in. It's also got the characteristics that we find with cervical vertebrae. So you see these transverse foramen off to the sides. Okay, so that's our flat atlas. Our axis, on the other hand, not so flat. We can see it actually has this large protuberance coming off the top there. Called the dins. So this dins articulates something like that. Okay, we can see it still has the vertebral frame in, the transverse frame in. So we know it's cervical. And now we're actually starting to see this other form, the spinous process that sticks off the front there. So all our other cervical vertebrae looks something like this. So you have the body, vertebral foramen, transverse foramen. You can see the spinous process, the cervical vertebrae also have a bifid process. So it's kind of split into there. We can now look at the thoracic vertebrae. So again, we have a body. It's larger, of course, than our cervical. You've got this very downward protruding spinous process. You can see it's no longer bifid, it's just singular there. And then compare that to our large lumbar vertebrae here. So let's look and kind of compare. You can see the body there is exponentially larger in our lumbar. It's huge, comparatively speaking. You've got a large spinous process. It's not nearly as downward protruding as an arthoracic vertebrae.