Lacrimal, Nasal Bones and Vomer

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.