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Okay, so welcome to this screen cost on the thoracic England. Now let's start off by taking a look at this diagram, which is what you'll see when you type in the skin on images. And it's basically what I've laid up here. So let's start with the boundaries on. We can isolate the boundaries by isolating the bones that are found in the thoracic inland. And these are the following bones. So you've got them in your dream of the sternum located here, essentially IV. Also go either clavicle. You got the first rib on either side and also the first thoracic vertebrae. And it forms this heart shaped whole, which is what is known as a superior thoracic inland. If we look at the structures in more detail, we can see that the veins and arteries are two separate structures. So the veins originally here on mainly start from subclavian vein, which is where enters the thoracic inland. We also have the internal jugular veins which often entered the thoracic in like two. This is identical on both sides, so we'll only look at the right hand side. We've got the right to break a Catholic vein which then enters into the superior vena cava. And like I said, it's the identical on the other side. Now the with the arteries, it's know identical. So we need to look at both sides differently. So let's start off by looking at the left hand side. The left hand side gives us the left subclavian. Artery is we can see here. We also have the left common court adultery that's we can see here. These both connect to form the arch of the aorta on the left hand side. We can also have a look at the right hand side, where we can see the right subclavian artery, and you also have the right common carotid artery. Now this is similar to the left hand side, except for one difference. That's a play being on becoming quartered. Form the break a Catholic trunk here, and this is where it connects directly to the artery, the aorta, and those are the vasculature off the skin. Let's apartment that we can have a look at a couple of nose that aren't really important to know but are important to visualize on either side. We have the identical nerves. The phrenic nerve on the right hand side and also the vagus nerve in the right hand side. This is like I said, I didn't go on the left hand side as well. And these are the two major knows that come through the skin on both sides and to visualize it a little bit better, we can then isolate those these and we can see that they do come through the drastic in here. Okay, The only other two notable structures are these two tubes to the esophagus, which we can see here, and also the trickier, which we can see here surrounded by it's circular rings of cartilage. It's also important to notice that the esophagus life's behind the trachea or posteriorly, because this can come on examination. The final thing tonight, which is quite complex, is the lymphatic system. There are quite a few lymph nodes that are in the thoracic inland, and it's not important to know what they are because it's very difficult to memorize such, But it is important to remember that there are lymph nodes and lymph vessels that do pass through the dry skin. It the final structure is the thymus gland, which is technically part of the lymphatic system it has the immunological function primarily on that is to make sure your T cells it lies just behind the manubrium as you so you can see just inside of the thoracic. Hopefully, that gives you a summary of the sleep period. Thoracic aperture, also known as starts again. Let if you got any other questions, feel free to email in a lot of snow.