Meninges

There are three layers of connective tissue that cover the spinal cord/brain dura, pia and arachnoid mater what is the middle layer?

The dura, is reflected to form four septa/folds one of which seperates the cerebeluum from the posterior cerebral hemispheres what is it called?

What is the name for the shelf of dura that covers the pituitary fossa of the sphenoid bone?

Is the arachnoid avascular?

What is the name of the areas in grooves of the brains surface where there are large accumulations of CSF, as there are cranial arachnoid bridges across them?

To what vertebral level (e.g. T12, C6 etc.) does the subarachnoid space with CSF continue to?

The cranial dura mater has two layers the inner layer being the meningeal, what is the outer layer?

Do the dural venous sinuses contain valves?

What is the name of the sinus that runs in the margin above the falx cerebri, beginning at the crista galli?

What sinus sits on either side of the body of the sphenoid, and forms an intra to extracranial venous connection?

What sinus runs in the junction of the tentorium cerebelli and falx cerebri, and continues as the transverse sinus?

What is the name of the S shaped sinus that grooves the petrous temporal bone, it passes through the jugular foramen to join the inferior petrosal sinus to form the jugular vein?

Which sinus is the connection between the cavernous and transverse sinus, and runs in the edge of the tentorium cerebelli?

What is the anatomical term sometimes used for grooves in the brain?

Is the cranial pia loosely or firmly attached to the brain?