Whether you’re an adult, whether you’re male, female, a kid those little dimples are really cute. They can be really important in today’s lecture because they’re easy to find on anybody’s backside. And because it’s a bony landmark I’m going to hit this really hard to remind you of how important those are. It goes like this, but you can see the top of my thumb. You can see the top edge, but then the edge disappears because it’s going forward. They’re created by bony protrusions on the pelvis.
This is your posterior superior iliac spine, or a good thing to remember are the dimples on your backside. That is sacrum right at the bottom of your body. The vertebrae down here are much bigger, and it ends up being this arrow-like thing. I know it’s kind of simplistic but we don’t need to do much more than this. Then you have the vertebrae that go down. I’m just going to do this kind of quickly like this. So you have these little vertebrae here, here, here, here, here. Okay, it’s the end or the last of the neck vertebrae.
So I’m going to adjust that just a little bit. Then the vertebrae just below that are the ones that hold the ribs.
You have seven neck bones ending with the most pronounced one. Over here what I’m going to do is probably keep this a little bit deeper, like deeper muscles, and seeing if that helps you. Obviously, we’re not going to be using the whole skeleton. I’m just going to take my finger and just kind of finish this off so it looks kind of like a little x-ray. They have a way of falling laterally like this towards the ground. It’s important to note the direction of the ribs themselves. Dinging out like your little floating ribs, etc. It’s roughly like a shape kind of like this. Then you have your rib cage, which is roughly 1-1/2 times the size of the head, just to keep things simple. It’s the bump on the back of your neck, roughly where your tag is on your T-shirt. I think all of your teachers have mentioned C7. I’m going to locate C7 because it’s such an important bony landmark. So what I’m going to do is I’m just going to go down. Let me just throw in our little model here and start with this. Okay, so what I’m going to do is I’m going to first draw for you a back. On leaner people sometimes the deeper muscles are more apparent than the superficial muscles. You put your arms up in the air, and all of a sudden all you see are the deep layer muscles. The deepest muscles are going to be the most visible in many poses. The back is layered, but the problem with that is that with every movement muscles go in and out, in and out. The front muscles, the superficial muscles are the ones that we recognize and see even though there are layers to the front. But now that I know a lot about the back, I understand what they’re doing and how they make all the muscles come to the surface. You look at a back by Peter Paul Rubens or Leonardo da Vinci or Michelangelo, and these things just look like who knows what’s going on back there. Since I’ve been teaching so many years I have learned to simplify it so that people don’t go to the same torture that I went through just trying to figure things out. I really did not have any idea of what was going on in the back area for a long, long time. It was kind of like going through a jungle without a map. One of the things I know I can tell you that when I was a student the back was one of the most complicated areas. I’m going to make this as easy as possible for you. Alright, so we’re going to be talking about the back muscles.
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