Draining channels of cavernous sinus | PGI Nov 2017 Preparations MCQ

Which of the following are draining channels of cavernous sinus

A. Inferior petrosal sinus 
B. Inferior opthalmic vein 
C. Sphenoparietal sinus 
D. Middle cerebral vein 
E. Superior ophthalmic vein


Answer. A. Inferior petrosal sinus ; (E) Superior ophthalmic vein.

The draining channels (communications) of cavernous sinuses are

(a) Into transverse sinus through the superior petrosal sinus.

(b) Into the internal jugular vein through the inferior petrosal sinus and through a plexus around the internal carotid artery

(c) Into pterygoid plexus of veins through the emissary veins.

(d) Into facial vein through superior ophthalmic vein.

(e) The rt. and lt cavernous sinuses communicate with each other through the ant, and post. inter

cavernous sinuses and through basilar plexus of veins.

THE TRIBUTARIES (Incoming channels)

A. From orbit                                           :Superior opthalmic and central vein of retina

B. From Brain                                         :Superficial middle cerebral V, inferior cerebral V

C. From meninges                  :Sphenoparietal sinus, the frontal trunk of middle meningeal V may drain

into pterygoid plexus or spheno-parietal or cavernous sinus.