All the following are contents of cavernous sinus EXCEPT
Ans. c (Mandibular nerve). (Ref. BD Chaurasia, Anatomy -3rd vol., 3rd ed., 73)Cavernous sinus.AnatomyPathology# Collection of venous sinuses on either side of pituitary.# Blood from eye and superficial cortex drain in cavernous sinus and then internal jugular vein.# CN III, IV, VI, V2, and V and postganglionic sympathetic fibres en route to the orbit all pass through the Cavernous sinus.# Only CN VI is "free -floating".# Cavernous portion of internal carotid artery is also here.# The nerves that control extraocular muscles (plus VI and V2) pass through the cavernous sinus.# Cavernous sinus syndrome (eg.due to mass effect) -- Ophthalmoplegia, ophthalmic & mandibular sensory loss.# Tolasa-Hunt syndrome is idiopathic granulomatous inflammation of cavernous sinus.# MRI is tool of choice for imaging cavernous sinus. Structures Related To Cavernous Sinus: OutsideIn the wallInside1SuperiorOptic tract, ICA, perforate substanceOcculomotorICA2InferiorForamen LacerumTrochlear nerveAbducent nerve3MedialSphenoid sinus, hypophysisOphthalmic nerve 4LateralUncusMaxillary nerve 5AnteriorSuperior orbital fissureTrigeminal ganglion6PostPetrous apex and crus cerebri
Occulomotor nerve
Abducens nerve
Mandibular nerve
Maxillary nerve
Cranial Cavity