Cranial Cavity & Meninges

1.Classify the dural venous sinuses. Describe the cavernous sinus under the following headings • Situation and extent • Relations • tributaries and communications • applied anatomy

2.A patient brought to causality following road traffic accident had bulging of left eyeball with every radial pulse beat. X-ray revealed fracture of left half of body of sphenoid. Answer the following questions: • Mention the location and extent to cavernous sinus • its relations and its tributaries • Mention the reason for pulsating bulge of left eyeball in the above patient • Classify the cranial dural venous sinuses

1.Confluence of venous sinuses

2.Cavernous sinus – structures related, tributaries and applied anatomy

1.Explain the clinical importance of cavernous sinus

2.Foramen Magnum

3.Tentorium cerebelli

4.Falx Cerebri

1.Name two dural folds

2.Structures passing through foramen magnum

1.Gasserian ganglion is located in

• a) Anterior cranial fossa
• b) Middle cranial fossa
• c) Posterior cranial fossa
• d) In neck at the level of C-6 vertebra

2.If left untreated, the infection can erode the thin layer of the bone between the mastoid air cells and the posterior cranial fossa and spread into which of the following sinuses

• a) Superior sagittal sinus
• b) Inferior sagittal sinus
• c) Cavernous sinus
• d) Sigmoid sinus