Major Dural Venous Sinuses

by Craig Canby, PhD

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    Now, we want to consider the various major dural venous sinuses. The first is one that’s already been highlighted or emphasized. That is the superior sagittal sinus. We see it running just underneath the midline and the skull. It has a posterior course and then is ending in the area here of the occiput. Running within the inferior aspect of the falx cerebri, we have an inferior sagittal sinus which is much smaller than the superior sagittal sinus. We also have running here, a straight sinus which is coursing posteriorly. We’ll take a look at this particular sinus again as it relates to another structure. The occipital sinus is shown here and it has a course among the internal aspect of the occipital bone. We have two transverse sinuses, a right one and a left one. We see one of those transverse sinuses here. These are very prominent sinuses. Here is another prominent sinus. This is going to be the sigmoid sinus. These are paired. These are important in that they are returning the blood to the internal jugular vein. Then more anteriorly, where the pituitary gland sits in the sella turcica, where we have the internal carotids and some cranial nerves, we have the cavernous sinus. The next sinus is the superior petrosal sinus. That is visualized right along here. It runs along the superior aspect of the petrous portion of the temporal bone. Then a collection point, if you will, of several sinuses is that of the confluence of sinuses. We’ll take a moment here to explain what sinuses empty into the confluence of sinuses. So here, we’ve isolated, just have one identifier here in the same image. This is our confluence of sinuses. So what are the dural venous sinuses that empty into this common site? First...

    About the Lecture

    The lecture Major Dural Venous Sinuses by Craig Canby, PhD is from the course Dural Venous Sinuses.

    Included Quiz Questions

    1. Superior sagittal sinus
    2. Inferior sagittal sinus
    3. Sigmoid sinus
    4. Straight sinus
    5. Cavernous sinus
    1. Cavernous sinus
    2. Superior sagittal sinus
    3. None of the above
    4. Occipital sinus
    5. Straight sinus
    1. Confluence of sinuses-->Transverse sinus-->Sigmoid sinus-->Internal jugular vein
    2. Confluence of sinuses--> Sigmoid sinus --> Transverse sinus -->Internal jugular vein
    3. Confluence of sinuses--> Sigmoid sinus --> Occipital sinus -->Internal jugular vein
    4. Confluence of sinuses--> Straight sinus --> Transverse sinus -->Internal jugular vein
    5. Confluence of sinuses--> Sigmoid sinus --> Cavernous sinus -->Internal jugular vein

    Author of lecture Major Dural Venous Sinuses

     Craig Canby, PhD

    Craig Canby, PhD

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