Dural Sinuses

Question 1

What are the three meningeal layers?

Answer 1

1. Dura - contains sinuses, continuous with periosteum
2. Arachnoid
3. Pia mater

Question 2

The _________ separates the cerebrum into left and right hemispheres.

Answer 2

falx cerebri

contains superior and inferior sagittal sinuses

Question 3

The _________ separates the cerebrum from the cerebellum.

Answer 3

tentorium cerebelli

contains straight, transverse, and superior petrosal sinuses

Question 4

Which two sinuses combine to form the IJV?

Answer 4

Inferior petrosal and sigmoid sinuses

Question 5

Which sinus connects the cavernous and sigmoid sinuses?

Answer 5

superior petrosal sinus

Question 6

What would be the first nerve infected in a cavernous sinus infection?

Answer 6

CN VI

Eye does not turn out, diplopia (double vision)

Question 7

What two structures run through the middle of the cavernous sinus?

Answer 7

CN VI and ICA

Question 8

The ventricular system is lined with _________ cells.

Answer 8

ependymal

Question 9

What is the flow of CSF in the ventricular system?

Answer 9

Lateral ventricles -> foramen of monro -> third ventricle -> cerebral aqueduct -> fourth ventricle -> subarachnoid space -> superior sagittal sinus via arachnoid granulations

Question 10

Which sinus communicates with the pterygoid plexus?

Answer 10

Cavernous sinus

Question 11

Which veins drain into the cavernous sinus?

Answer 11

Superior and inferior ophthalmic veins