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Middle Ear - Stapes

A. Left stapes. B. Base of stapes, medial surface.

  • named by its resemblance to a stirrup
  • consists of a head, neck, two crura, and a base
Adult Stapes Anatomy
Component Description
Head (capitulum stapedis) presents a depression, which is covered by cartilage articulates with the lenticular process of the incus
Neck constricted part of the bone, succeeding the head gives insertion to the tendon of the Stapedius muscle
Two crura (crus anterius and crus posterius) diverge from the neck , connected at their ends by a flattened oval plate anterior is shorter and less curved than the posterior
Base (basis stapedis) forms the foot-plate of the stirrup fixed to the margin of the fenestra vestibuli by a ring of ligamentous fibers

(text modified from Gray's Anatomy)



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Reference

Gray H. Anatomy of the human body. (1918) Philadelphia: Lea & Febiger.


Cite this page: Hill, M.A. (2019, March 26) Embryology Gray0918.jpg. Retrieved from https://embryology.med.unsw.edu.au/embryology/index.php/File:Gray0918.jpg

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current04:07, 20 May 2011Thumbnail for version as of 04:07, 20 May 2011500 × 283 (17 KB)S8600021 (talk | contribs)==Middle Ear - Stapes== * named by its resemblance to a stirrup * consists of a head, neck, two crura, and a base ===Head (capitulum stapedis)=== * presents a depression, which is covered by cartilage * articulates with the lenticular process of the inc
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