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
|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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Gray H. Anatomy of the human body. (1918) Philadelphia: Lea & Febiger.
Cite this page: Hill, M.A. (2019, July 23) Embryology Gray0918.jpg. Retrieved from https://embryology.med.unsw.edu.au/embryology/index.php/File:Gray0918.jpg
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|current||03:07, 20 May 2011||500 × 283 (17 KB)||S8600021||==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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