Which of the following are draining channels of cavernous sinus -a) Inferior petrosal sinusb) Inferior ophthalmic veinc) Sphenoprietal sinusd) Middle cerebral veine) Superior ophthalmic vein
Draining channels (communications) of cavernous sinus

Into transverse sinus through superior petrosal sinus
Into internal jugular vein through inferior petrosal sinus and through a plexus around the ICA
Into pterygoid plexus of veins through emissary veins
Into facial vein through superior ophthalmic vein
Right and left cavernous sinus communicates with each other by anterior and posterior intercavernous sinuses and through basilar plexus of veins
a
b
ab
ae