Tributaries of cavernous sinus are all except ?
**Core Concept**
The cavernous sinus is a dural venous sinus that plays a crucial role in draining deoxygenated blood from the brain. It receives blood from various tributaries, which are veins that drain into the sinus. Understanding the tributaries of the cavernous sinus is essential for identifying potential pathways for infection spread and for surgical planning.
**Why the Correct Answer is Right**
The correct answer is the option that does not belong to the list of tributaries of the cavernous sinus. The cavernous sinus receives blood from the superior and inferior ophthalmic veins, the superior and middle cerebral veins, the sphenoparietal sinus, and the basal vein of Rosenthal. These tributaries drain into the cavernous sinus, which then empties into the superior and inferior petrosal sinuses.
**Why Each Wrong Option is Incorrect**
**Option A:** This option is a potential mistake. While some veins may drain into the cavernous sinus indirectly, this option is not a direct tributary.
**Option B:** This option is incorrect as it is a tributary of the cavernous sinus.
**Option C:** This option is incorrect as it is a tributary of the cavernous sinus.
**Option D:** This option is incorrect as it is a tributary of the cavernous sinus.
**Clinical Pearl / High-Yield Fact**
It is essential to remember that the cavernous sinus is a potential pathway for infection spread, particularly from the face and orbit. The superior and inferior ophthalmic veins are direct tributaries of the cavernous sinus, and infection in these veins can lead to cavernous sinus thrombosis.
**Correct Answer:** D.