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Ok. All right. Can you guys hear now? Oh Yes. No. Ok. Ok. So some of you can hear me but some of you can't hear me. Ok? I'm gonna go through the settings, ok? It's got that set up going into the computer and I'll just double check the device settings. Ok? Ok. I've changed the microphone so it sh now should be coming from the camera. Can you guys hear me at present? Cos it's, I mean some of you can hear me but some of you can't. So I'm just wondering what's going on. Ok? So it looks like it shifted to a yes. So you guys can hear me now. Um I'm sorry to be pedantic. I just wanna make sure people can hear what I'm saying. Ok. Alright. It looks like the pole shifted to say yes. I'm tempted to say that the microphone is working. Now I've just started to switch to a different one. This new head has been a real pain cos it doesn't seem to want to work when I want it to. Ok. I'm I'm gonna start a different poll cos II appreciate you guys can only answer it once OK. All right. So testing. Can you guys hear me? OK. Fantastic. Fantastic. OK. All right. So, now what we're gonna do is I'm gonna share the screen that we can get the cracking ordinarily, I do a bit of an intro, but I think we'll skip past that part because we've taken so much time already. Share the screen. OK? I've got a few things up here. There's a teaching, make sure that's coming up. Ok. That's coming up. Fantastic. And I'm going to present a view and I'm going to put it on so that you can see my notes because that way it will be in the recording. So my name Swing, I'm a junior doctor. I'm also the executive co of a charity called Brain Book, which works on demystifying neurosurgery and basically anything educationally related to neurosurgery such as neuroanatomy or neurology, et cetera, et cetera. We have some educational slides on the anatomy of the spinal cord, anatomy wise. It will be useful for you because it will show you about the spinal cord in terms of how it's laid out. But it's also useful because it gives you a bit of the logic behind how you answer some of the questions in your clinical years. It's definitely one of the shorter ones, I'd say it won't take any longer than 25 minutes. But I'd rather have something that's concise and to the point than have something that goes un needlessly for an hour. Ok. So that let's go cracking. So this is just a bit of a general claim. Don't see this as for medical practice. It's very much for exams. I'm not an expert of any stretch of the imagination and this is basically some of the contexts we're going to be governed today. So, externally, I'll point out with my mouse anteriorly, we can see here, we've got the ventral median fissure here and next to it is the ventrolateral sulcus. Naturally, it makes sense. It's on the ventral side, it's slightly laterally posterior. On the other side, we have the dorsal median sulcus centrally and you can see the bumps here. You have the cate and gracila fasciculus. Now, the way I remember it is leg is more central than the arm and Graci has a gene and so does leg. So that's how I remember that gracila goes in the middle C is for arms and that'll come later. Don't worry. Light is a useful piece of information to have for earlier years of medicine. I'd say now you have smaller branches which come off the rami and go to the cords. And these are called Rutles. And of course, we have the dentate ligament here, which is basically the arachnoid, you have it in the brain, but this is a different form of that lower down in the spinal cord and it works as anchoring to provide support. Ok. So covering internal anatomy, this is a bit counterintuitive because you have two main parts, you have this part here, which is the dorsal furculus and you have sorry, you have the ventral lateral, which is here. So this is where the lungs would be. This is where the back would be so dorsal here, which is smaller and then the ventral lateral and of course, it's lateral and it's ventral. So it's a mix of the two here. The white matter is actually gray matter. So it's actually the other way round to what you'd expect. You have the dorsal horn here, which is for sensory and you have the ventral horn here, which is for motor. OK? And this is far more, less important. I've never seen this company an exam question. But this is just for your knowledge that generally speaking, you divide them into different areas called rax lamina. And you can see the different areas here. They wanna say that's very much a pub quiz question, not really something that's ever come up, in my opinion. OK. There are lots of different areas. So we have the posterior columns, we talked here about the gracila fasciculus and the cun fasciculus. So as I said before, Gracila is for the leg and leg ends with G and gracila starts with G. So that's how I remember that.