Paper - The Huber six-somite human embryo (M 71)
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Anson BJ. Cauldwell EW. and Pick JW. The Huber six-somite human embryo (M 71). (1943) 59th Meeting American Association of Anatomists.
|Carnegie stage 10 human embryo Humber (M71).
By this same author:
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The Huber six-somite human embryo (M 71)
Barry J. Anson, Earl W. Cauldwell and James W. Pick
Department of Anatomy, Northwestern University Medical School.
- Fifty-ninth annual meeting of the American Association of Anatomists which was to have been held at McGill University, Montreal, has been postponed. This abstract was submitted.
This specimen is important because it will fill a gap in the published descriptions of human embryos. Only the fragmentary description of Klb (5-6 somites) exists between the 4-somite specimens of Bartelmez, Sternberg and Orts Llorca and the 7-somite specimen of Payne.
Detailed studies have been carried out on M71 and extended comparisons with all published specimens between 4 and 8 somites have been made. In most respects M71 occupies the position in the series one would expect. Among its anatomical features (and the conclusions drawn from them) the most notable are the following: It is the oldest described specimen that still presents a chordal canal in the rostral end of the head process. It is the youngest in which the rostral neural crest has been identified. It is the earliest to show an indication of the spinal neural crest.
The heart should occupy the position in the Davis series now accorded by him to Klb, whereas the latter, perhaps, Bad better be dropped from any series depicting normal cardiac development. The level of closure of the neural folds is normally variable and a marked midbody flexure is not necessarily associated with irregularities in closure. It is more probable, rather, that the position and extent of neural tube closure, which resists flexing, influences the site of angulation.
Cite this page: Hill, M.A. (2020, June 3) Embryology Paper - The Huber six-somite human embryo (M 71). Retrieved from https://embryology.med.unsw.edu.au/embryology/index.php/Paper_-_The_Huber_six-somite_human_embryo_(M_71)
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