00:01 Now let's take a look at a small bone the lacrimal bone. 00:05 Is forming part of the medial bony portion of the orbit. 00:10 And this portion here of the maxillary bone is the frontal process of the maxillary bone with which it's interacting. 00:19 So if we zoom that in, we can see that in this area we have foster for something called the lacrimal sac. 00:26 And again lacrimal has to do with tears. 00:29 So this is where we're going to find the nasolacrimal duct. 00:34 So as tears move their way from the lateral aspect to the medial aspect, they're going to be draining out through the nasolacrimal duct. 00:43 Now let's take a look at the nasal bone. 00:49 Superiorly, it borders the nasal part of the frontal bone. 00:54 Whereas inferiorly it borders the nasal cartilages. 00:59 Mediately, it's going to border its contralateral nasal bone on the opposite side. 01:06 And then it's also going to interact with the frontal process of the maxilla more laterally. 01:14 There are some muscles in this area. 01:17 Such as the procerus and nasalis which are muscles of facial expression that attach to the nasal bones. 01:26 If we go back to looking at the nasal septum, we can see another bone called the vomer. 01:32 And the vomer is interacting superiorly with the body of the sphenoid bone. 01:38 Inferiorly with the nasal portion of the maxillary and palatin bones. 01:44 And then anteriorly we have the perpendicular plate of the ethmoid bone. 01:49 As well as the nasal cartilages.
The lecture Lacrimal, Nasal Bones and Vomer by Darren Salmi, MD, MS is from the course Skull.
What bone forms a superior border with the nasal bone?
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