Fig 1.

A diagrammatic representation of the posterior view of the left internal acoustic meatus and the JF after removal of the cerebellum. The short arrow indicates the opening of the cochlear aqueduct. The long arrow indicates the dural ring, which divides the endocranial openining of the JF: the recess for CN IX and the recess for CN X/XI. T indicates tentorium cerebelli; SCP, superior cerebellar peduncle; MCP, middle cerebellar peduncle; MO, medulla oblongata; VA, vertebral artery; IV, trochlear nerve; VII, facial nerve; VIII, vestibulocochlear nerve; IX, glossopharyngeal nerve; X, vagus nerve; XI, spinal accessory nerve; XII, hypoglossal nerve.