Cochlear aqueduct

Cochlear aqueduct
Bone: Aqueduct of cochlea
Gray141.png
Left temporal bone. Inferior surface. (Aquæductus cochleæ labeled at left, fifth from the top.)
Latin a. cochleae
Gray's subject #34 144

Medial to the opening for the carotid canal and close to its posterior border, in front of the jugular fossa, 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 and the subarachnoid space, and transmits a vein from the cochlea to join the internal jugular

Additional images

  • Base of skull. Inferior surface.

This article was originally based on an entry from a public domain edition of Gray's Anatomy. As such, some of the information contained within it may be outdated.

v · d · eBones of head and neck: the neurocranium of the skull (TA A02.1.01–07, GA 2.129–155)
Occipital
Other
Parietal
Frontal
Ethmoidal notch · Fossa for lacrimal gland · Trochlear fovea · Frontal sinus · Frontonasal duct
Temporal

Carotid canal · Facial canal (Hiatus) · Internal auditory meatus · Cochlear aqueduct · Stylomastoid foramen

fossae (Subarcuate fossa, Jugular fossa) · canaliculi (Inferior tympanic, Mastoid) · Styloid process · Petrosquamous suture

(note: ossicles in petrous part, but not part of temporal bone)
Sphenoid
Surfaces
fossae (Pterygoid, Scaphoid) · pterygoid plates (Lateral, Medial) · Pterygoid canal · Hamulus
Other
Ethmoid
Plates
Surfaces
Ethmoid sinus · ethmoidal foramina (Posterior, Anterior)

M: BON/CAR

anat(c/f/k/f, u, t/p, l)/phys/devp/cell

noco/cong/tumr, sysi/epon, injr

proc, drug(M5)
v · d · eSensory system: Auditory and Vestibular systems (TA A15.3, TH 3.11.09, GA 10.1029)
Outer ear

Pinna (Helix, Antihelix, Tragus, Antitragus, Incisura anterior auris, Earlobe) • Ear canal • Auricular muscles

Eardrum (Umbo, Pars flaccida)
Middle ear

Labyrinthine wall/medial: Oval window · Round window • Secondary tympanic membrane • Prominence of facial canal • Promontory of tympanic cavity

Membranous wall/lateral

Mastoid wall/posterior: Mastoid cells • Aditus to mastoid antrum • Pyramidal eminence

Carotid wall/anterior

Tegmental wall/roof: Epitympanic recess

Jugular wall/floor
Stapedius · Tensor tympani
Bony part of pharyngotympanic tube · Cartilage of pharyngotympanic tube (Torus tubarius)
Inner ear/
(membranous labyrinth,
bony labyrinth)
General cochlea
Perilymphatic space
Perilymph • Cochlear aqueduct

Reissner's/vestibular membrane • Basilar membrane

Endolymph • Stria vascularis • Spiral ligament

Organ of Corti: Stereocilia • Tectorial membrane • Sulcus spiralis (externus, internus) • Spiral limbus
Cells

M: EAR

anat(e/p)/phys/devp

noco/cong, epon

proc, drug(S2)

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