Tympanic part of temporal bone
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Last revised by Grace Carpenter ◉
on 31 Dec 2020
Citation, DOI, disclosures and article data
Citation:
Knipe H, Carpenter G, Hacking C, et al. Tympanic part of temporal bone. Reference article, Radiopaedia.org (Accessed on 28 Mar 2025) https://doi.org/10.53347/rID-28370
rID:
28370
Article created:
Disclosures:
At the time the article was created Henry Knipe had no recorded disclosures.
View Henry Knipe's current disclosures
Last revised:
31 Dec 2020,
Grace Carpenter ◉
Disclosures:
At the time the article was last revised Grace Carpenter had no recorded disclosures.
View Grace Carpenter's current disclosures
Revisions:
9 times, by
6 contributors -
see full revision history and disclosures
Systems:
Sections:
Synonyms:
- Tympanic part
- Tympanic part of the temporal bone
- Tympanic temporal bone
The tympanic part of the temporal bone is situated inferiorly to the squamous part and anteriorly to the mastoid part.
Gross anatomy
The tympanic part of the temporal bone is composed of anterior and posterior surfaces and superior, inferior and lateral borders.
Anterior surface
Its anterior surface forms the posterior (non-articular) part of the mandibular fossa. The anterior surface is continuous with the squamous part of the temporal bone at the tympanosquamous fissure, and medially, it continues as the petrotympanic fissure, where it fuses to the petrous part of the temporal bone.
Posterior surface
The posterior surface surrounds the external auditory meatus, forming the anterior wall, floor and some of the posterior wall of the bony external acoustic meatus.
Borders
- superior: tympanosquamous fissure
- inferior: extends medially and bifurcates along the base of the styloid process as the vaginal process
- lateral: gives the attachment to the cartilaginous part of the external acoustic meatus, and fuses posteriorly with the mastoid part of the temporal bone, via the tympanomastoid fissure
References
- 1. Temporal Bone Imaging. Thieme. ISBN:1588904016. Read it at Google Books - Find it at Amazon
- 2. Gray H. Anatomy of the Human Body, 20th edition. (1918) ISBN:1587341026. Read it at Google Books - Find it at Amazon
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