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everyone welcome to this compete and not only video on the nasal cavities. So in this video, we're going to go over the bones for the music companies as well as the country make. This is during the sides on innovation of nasal cavities. But before we start, make sure that you've got this screen up on your own devices using the computer, not only code. So I start off with orange taking results on the screen. So we're looking at a sagittal section through the cranium in nasal companies and specifically we're looking at the nasal cavity here. So let's begin with the bones up for Ms Comedy. The first bone we're going to look at as the nasal bone, which is the bone. All highlight. Right now it's this bone right here. Then we want to be maxilla, which is of this bone highlighted right here and next. We're gonna look at the like mobile, which is this one right here and going to zoom, and so you can see it better. Then we can also visualize it from a different angle. So we look at it from this angle, we can see the lacrimal bone right here the next but we're going to look at is the polyps on both on a section of the palate on bone forms be floor of the nasal companies. Next we have the sphenoid bone right here and one of singing than other completely Not true Torrey ALS on immediately. Next to it is the IV for bone. Know what's important to remember about the eat More bonus, the desired of it are a superior on middle country Immediately inferior to those is the inferior culture which is highlighted right here. So what are these countries of the country or bony structures up basically stick out into the nasal cavity But they have a very important role in warming and committee flying the incoming air of those increasing with the surface area of the nasal comedies. So the space between two country is called in the eight s to have four in the eighties is a superior which is between the superior on Middle Contra a medal mediators, which is between the middle of a favorite country on and and very maters, which is inferior to be impaired contra. So we're going to look at them. You just a little more detail now as well as the drainage sides of the nasal cavity. So if I click here on respiratory, I click the plus sign you're going to see these new structural have appeared and now we conversion. Lies it the Sinuses as well. So we have the screen with Sinus here, the Wydell air cells here, the frontal Sinus. Here. I'm finally being exonerees Sinus right here. So let's go over the drainage sites of these Sinuses. So the first one is this fena mortal recess. So this is where the sphenoid Sinus drains into. So this again sphenoid Sinus. And this passage here is the spin A model research. So the frontal Sinus on the anterior mortal Aircell during into this duct here in the front of nasal in ST Highlights. Now we're gonna move on to be post their mortal cells, which drain into the superior of mediators so could visualize the superior meters. We're going to remove some of these structures here, so we're going to move these layers as well as the nasal septal cartilage. And here was he the country We're going to move, the more I don't air cells. I was seeing the superior meadow on a fair country. So the superior of mucus, as we said, is between the superior and middle country. So this is the superior me this and this is where, because their mortal ourselves during entered. So now we're going to move on to the middle mortal Aircell and things during into a structure known as the more the Fuller. So to visualize the structure, we're going to place everything back on to our model. And the model Bulla is located right here. It's highlighted right here. And this is where the middle of a model air cells during entry. So lastly, the thing looks other a Sinus drains into the floor of the same, you know, hiatus. So to visualize the same, you know, hiatus. We're going to actually remove the maxillary Sinus. But do you remember that is positioned right here? So we're going to remove the looks in your Sinus and here received this structure right here, and that is the similar in a hiatus. So the maxillary Sinus drains the floor of this place, so putting them exhilarate Sinus back on, we're going to look at the opening of the knees and lacrimal duct and This opens in this space right here for Syria, too. The maxillary Sinus. And this is where access fluid from being like herbal system drains enter. So this was a drink of the sides of the nasal cavity, and now we're going to briefly look out the innovation of the cavities. So the person of that interview it's a nasal cavities of you'll clock during her, which is cradle nerve number one, and it's responsible for a sense of smell. A second nerve is the trigeminal nerve, which is cranial nerve number five, and it provides general sensation the two branches that carry the sensation on the one and V two, so mainly be a public on maxillary division of the trigeminal nerve. But I also have the facial nerve creatine learned over seven innervates the glands of parasympathetic quiet, please. Lastly, we have sympathetic Leiber's from the spine level to one that innovate vascular smooth muscle in the nasal cavities. So this wasn't over given. These are cavities with it's bones, Country Mediated says during your slides on innovation