Fig. 1. Photomicrographs of the base and crus of the stapes, showing progressive stages in the removal of cartilage and the formation of bone.
X 40. (a) Base at posterior crus, left ear; 167 mm. fetus (Wisconsin series 105, slide 19, section 9).
(b) Base and anterior crus, left ear; 175 mm. fetus (Wisconsin series 104, slide 17, section 5).
(c) Posterior crus and base, left ear; 160 mm. fetus (Wisconsin series 41, slide 18, section 5).
(d) Posterior crus and base, left ear; 170 mm. fetus (Wisconsin series 131, slide 21, section 10).
(e) Posterior crus and base, left ear; 210 mm. fetus (Wisconsin series 51, slide 38, section 6).
(f) Posterior crus and base, left ear; 290 mm. fetus (Wisconsin series 59, slide 36, section 1).
Abbreviations: B and C indicate bone and cartilage, respectively, of the bilaminar plate of the stapedial base; M represents the base of the stapes; V, vestibular layer of endochondral (endosteal) bone which forms one of the two constituent lamellas in the base of the stapes.
Anson BJ. and Cauldwell EW. Stapes, fissula ante fenestram and associated structures in man: V . From the fetus of 160 mm to term. (1948) 48(3): 263-300.
Cite this page: Hill, M.A. (2019, March 23) Embryology Anson1948 fig01.jpg. Retrieved from https://embryology.med.unsw.edu.au/embryology/index.php/File:Anson1948_fig01.jpg
- © Dr Mark Hill 2019, UNSW Embryology ISBN: 978 0 7334 2609 4 - UNSW CRICOS Provider Code No. 00098G
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