5.0 Dural Venous Sinuses Flashcards

1
Q

Which veins of the face can drain into the facial vein OR the dural venous sinuses via the orbit?

A

The supra-orbital vein.

The superior ophthamic vein.

The inferior ophthalmic vein.

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2
Q

Which cranial nerve is most likely to be impinged by an aneurysm of the petrous or cavernous part of the internal carotid artery?

A

The abducens (CN VI) nerve, due to its proximity to the internal carotid artery.

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3
Q

Which bulb of the internal jugular vein has a valve?

A

The inferior bulb.

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4
Q

What makes up the cranial dural septa?

A

The dense regular connective tissue of the dura mater.

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5
Q
A
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6
Q

What vein can be found within the substance of the parotid gland?

A

The retromandibular vein.

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7
Q
A
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8
Q

What structures would be occluded by a pituitary mass pressing into the cavernous sinus?

A

The venous return of the cavernous sinus.

The internal carotid artery.

The cranial nerves CN III, CN IV, CN V1 (ophthalmic), CN V2 (maxillary), CN VI.

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9
Q
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10
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11
Q
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12
Q

Which foramen does the middle meningeal artery pass through?

A

The foramen spinosum.

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13
Q
A
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14
Q

What are the two layers of the dura mater?

A

Periosteal and Meningeal

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15
Q

The superior and inferior dural venous sinuses are within what structure?

A

The falx cerebri.

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16
Q

What structure is responsible for the interface between the CSF system and the venous system?

A

Arachnoid villi, forming arachnoid granulations.

17
Q
A
18
Q

What can cause an epidural hematoma? How does it look on a CT?

A

A strike to the head that ruptures the middle meningeal artery. Looks like a convex lens on the side of the brain.

19
Q

What can cause a subdural hematoma? How does it look on a CT?

A

Usually results from tear in bridging veins. Looks like a crescent moon around the brain (wider reach than a epidural hematoma).

20
Q

What can cause a subarachnoid hemorrhage? How does it look on a CT?

A

Can be caused by a ruptured aneurysm from a cerebral artery. Looks like a spiderweb.