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Dura mater:

outermost layer of the meninges

It has some specialisations

    falx cerebri

        separates your 2 cerebral hemisphere

        lies within the superior sagittal sulcus  

    falx cerebelli

        teeny tiny

           goes in between the cerebellar hemisphere

        really hard to see

    tentorium cerebelli

        perpendicular to the falx

        = tent over the cerebellum

        a tent that lies between the occipital lobe and the cerebellum below it

    dural (venous) sinuses

        where blood returns to the venous system

        they don’t have any valves, so blood can flow in any direction

        lined with endothelium, so are smooth, but don’t have any smooth muscle

        eventually drain toward the base of the skull

        drain into the inferior jugular vein —> go back into your heart

        superior sagital sinus

        inferior sagital sunus

        straight sinus

            where the falx and tentorium come together

        transverse sinus

            on the outer edge of the tentorium cerebelli

            goes transversely around the back

        confluens

            where the transverse and the straight come together with the superior sagittal and the inferior sagittal