Bony part of pharyngotympanic tube

Bony part of pharyngotympanic tube
Bony part of pharyngotympanic tube
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View of the inner wall of the tympanum
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External and middle ear, opened from the front; right side.
Latin pars ossea tubae auditivae
Gray's subject #230 1043

The bony part of pharyngotympanic tube is about 12 mm. in length. It begins in the carotid wall of the tympanic cavity, below the septum canalis musculotubarii, and, gradually narrowing, ends at the angle of junction of the squama and the petrous portion of the temporal bone, its extremity presenting a jagged margin which serves for the attachment of the cartilaginous portion.

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 As such, some of the information contained within it may be outdated.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 · 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

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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