 So, because there are superficial and deep muscles, I'm going to need to bisect these muscles to reveal the deep muscles underneath them. So, I'm actually going to switch to the other side to do the deep muscles. So, I'm going to leave this side as my superficial side, so that I can clearly see my sartorius and gracilis. And I'm going to do the exact same thing that I did to the left side to the right side. What I want to do, again, just kind of work out to clear out that underneath the connective tissue, I want to get the probe right at the kind of the midway point, take my scissors. You could also do it with a scalpel, I just find it's to be easier with the scissors and a little safer. And then just cut that muscle in half. Alright, so then we reflect the muscle back and now I can reveal these deep muscles. And so underneath the sartorius are the muscles that make up the quadriceps. So there are four muscles and they are the vastus medialis, the rectus femoris, the vastus lateralis. And in between here is going to be the vastus intermedialis. And that's a much deeper muscle that we'll need to kind of separate the rectus femoris and rectus and vastus lateralis in order to see. So what I'm going to do now is just try to separate these three muscles. And so this is connective tissue that again would need to be removed and I'll remove that later. But if you can see there is a muscle here, it's a very very thin muscle with that connective tissue. Alright, so the boundary of the muscle is there. Alright, that's not a muscle that we need. So we're going to ignore that and actually cut, this is a more dense connective tissue. So for this it might be a little easier to use this scalpel just to cut through so that we can see the vastus lateralis as well as the rectus femoris. Alright, so I'm just going to reflect this back a bit more. And so now you can really see and actually closer to the origin of this muscle where this adipose tissue is, you can see the division between these three muscles. So this is the vastus lateralis, this is the rectus femoris, and this is the vastus medialis. So one, two, three, and then in between here these two muscles is the vastus medialis. And so the separation between the vastus lateralis and the rectus femoris is really tricky. So that's why I'm using the pro because it's really easy to tear the muscle. And so you really want to, and you might have to get, just look really closely to see where it is that the muscle actually separates. You don't want to create new muscles. You just kind of want to leave the muscles that are there in place. So it looks like I've found the separation. And so we can see it, but there's the separation. Between the vastus lateralis, rectus femoris, and then the vastus medialis here. Now what I'm going to do is just continue working to separate these two muscles so as to reveal the vastus intermedialis. So if you look, I've been able to separate the rectus femoris and the vastus lateralis to see a muscle deep down there that lies really close to the femur, and that's the vastus intermedialis. So it's a very, very deep bone or deep muscle that runs very, very close to the femur. So those are the quadriceps, as we commonly call them.