File:Nanagas1925-fig16.jpg

From Embryology

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Fig. 16 Superimposed figures of Anencephalic and Normal Fetuses

  • a - the normal fetus has a crown-heel length corresponding to the crown-heel length of the anencephalus as calculated from the length of the inferior extremity by the Calkins-Scammon formula. (Inferior extremity (mm.) = 0.43 CH (mm.) - 7.11 rnm.).
  • b - the normal fetus has a crown-heel length equal to that of the anencephalus as calculated from the length of the superior extremity by the Calkins-Scammon formula. (Superior extremity (mm.) = 0.4 CH (mm. - 4.0 mm.).


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Pages where the terms "Historic" (textbooks, papers, people, recommendations) appear on this site, and sections within pages where this disclaimer appears, indicate that the content and scientific understanding are specific to the time of publication. This means that while some scientific descriptions are still accurate, the terminology and interpretation of the developmental mechanisms reflect the understanding at the time of original publication and those of the preceding periods, these terms, interpretations and recommendations may not reflect our current scientific understanding.     (More? Embryology History | Historic Embryology Papers)
Links: Fig 1. Anencephalus types | Fig 1a. anencephalic acranius | Fig 1b. anencephalic craniorhachischisis | Fig 1c. microcephalic acrauius | Fig 1d. microcephalic craniorhachischisis | Fig 1e. exocephalic acranius | Fig 16. anencephalic and normal fetuses | Historic Embryology Papers | Neural Abnormalities | Folic Acid and Neural Tube Defects | Skull Development


Reference

Nañagas JC. A comparison of the growth of the body dimensions of anencephalic human fetuses with normal fetal growth as determined by graphic analysis and empirical formulae. (1925) American J. Anatomy. 455-494.


Cite this page: Hill, M.A. (2024, April 25) Embryology Nanagas1925-fig16.jpg. Retrieved from https://embryology.med.unsw.edu.au/embryology/index.php/File:Nanagas1925-fig16.jpg

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