Lacrimal, Nasal Bones and Vomer

by Darren Salmi, MD, MS

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    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.

    About the Lecture

    The lecture Lacrimal, Nasal Bones and Vomer by Darren Salmi, MD, MS is from the course Skull.

    Included Quiz Questions

    1. Frontal bone
    2. Ethmoidal bone
    3. Lacrimal bone
    4. Temporal bone
    5. Maxilla

    Author of lecture Lacrimal, Nasal Bones and Vomer

     Darren Salmi, MD, MS

    Darren Salmi, MD, MS

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