Cavernous Sinuses

by Craig Canby, PhD

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    I now want to have you revisit the cavernous sinuses. The purpose of this is to understand the structures that relate to the cavernous sinuses. Then we’ll have an opportunity here shortly to emphasize the clinical relevance of these related structures. So here we’re looking at the cavernous sinuses. They are paired. The first structure related to the cavernous sinus is the internal carotid artery. These would be paired structures. So, we see it on this side of the image and on the right side of the image here as well. Traveling with the internal carotid arteries would be the carotid plexus of sympathetic nerve fibers. These are not shown in this particular image. Another structure that relates to the cavernous sinus is one of the cranial nerves. This happens to be the abducent nerve or cranial nerve number VI. We see that slender nerve right in through here. You can appreciate the anatomic intimacy of the abducent nerve with the internal carotid artery. Oculomotor nerve, cranial nerve number III relates to the cavernous sinus. Here, we can see that it’s located within the wall of the cavernous sinus, similarly here on the opposite side as well as you would expect. The trochlear nerve has a relationship as well to the cavernous sinus. We can see the trochlear nerve within the wall here. The ophthalmic division of the trigeminal nerve or the ophthalmic nerve itself, V/1 is located again within the wall of your cavernous sinus. There’s one final cranial nerve that has a relationship here. It’s more inferiorly and laterally displaced. That is going to be cranial nerve V/2, which is the maxillary nerve or the maxillary division of your trigeminal nerve. Now, for some clinical correlations or considerations, first is that we’re going to explore. I want you...

    About the Lecture

    The lecture Cavernous Sinuses by Craig Canby, PhD is from the course Dural Venous Sinuses. It contains the following chapters:

    • Cavernous Sinuses
    • Clinical Correlations

    Included Quiz Questions

    1. Mandibular division of trigeminal nerve
    2. Maxillary division of trigeminal nerve
    3. Abducens nerve
    4. Oculomotor nerve
    5. Ophthalmic division of trigeminal nerve
    1. Loss of corneal blink reflex
    2. Right sided ophthalmoplegia
    3. Fixed dilated pupil
    4. Maxillary sensory loss
    5. Ptosis
    1. Acute meningitis
    2. Pharyngitis
    3. Gingivitis
    4. Endophthalmitis
    5. Vestibular neuritis
    1. Internal carotid artery
    2. Basilar artery
    3. Bridging veins
    4. Middle meningeal artery
    5. Cranial nerve VII

    Author of lecture Cavernous Sinuses

     Craig Canby, PhD

    Craig Canby, PhD

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