Medial to the opening for the
carotid canal and close to its posterior border, in front of the
jugular fossa
The jugular fossa is a deep depression in the inferior part of the temporal bone at the base of the skull. It lodges the bulb of the internal jugular vein.
Structure
The jugular fossa is located in the temporal bone, posterior to the carotid can ...
, is a triangular depression; at the apex of this is a small opening, the aquaeductus cochleae (or cochlear aqueduct, or aqueduct of cochlea), which lodges a tubular prolongation of the
dura mater establishing a communication between the
perilymphatic space
Perilymph is an extracellular fluid located within the inner ear. It is found within the scala tympani and scala vestibuli of the cochlea. The ionic composition of perilymph is comparable to that of plasma and cerebrospinal fluid. The major ca ...
and the
subarachnoid space
In anatomy, the meninges (, ''singular:'' meninx ( or ), ) are the three membranes that envelop the brain and spinal cord. In mammals, the meninges are the dura mater, the arachnoid mater, and the pia mater. Cerebrospinal fluid is located in th ...
, and transmits a vein from the
cochlea to join the
internal jugular vein.
Additional images
File:Gray187.png, Base of skull. Inferior surface.
References
Bones of the head and neck
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