Parietal Bone

by Darren Salmi, MD, MS

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    00:02 Now let's look at the parietal bones.

    00:05 So we have these lines called the superior temporal lines and inferior temporal lines.

    00:10 That have to do with eventually a muscle called the temporalis in this area.

    00:16 And there's this fossa or depression there.

    00:19 That is going to give space for this temporalis muscle.

    00:23 Which is a wide flat powerful muscle.

    00:25 Because it's involved in chewing or mastication.

    00:30 If we look on the interior surface, we see some grooves.

    00:34 And here we see a groove for the superior sagittal sinus.

    00:38 Which is one of the dural venous sinuses of the coverings of the brain.

    00:43 And here we see that superior sagittal sinus sitting in that groove.

    00:50 The parietal bone has borders with the frontal bone.

    00:55 And it has a sagittal border where it borders its opposite parietal bone.

    00:59 So the left and right parietal bones meet here.

    01:03 We also have the inferior squamosal border so the squamous portion of the temporal bone sits there.

    01:10 We also have the occipital border with the occipital bone.

    About the Lecture

    The lecture Parietal Bone by Darren Salmi, MD, MS is from the course Skull.

    Included Quiz Questions

    1. Superior sagittal sinus
    2. Inferior sagittal sinus
    3. Cavernous sinus
    4. Sphenoid sinus
    5. Lateral parietal sinus

    Author of lecture Parietal Bone

     Darren Salmi, MD, MS

    Darren Salmi, MD, MS

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