Category:Carnegie Embryo 950

From Embryology

This Embryology category shows pages and images that relate to the Carnegie Collection Embryo No. 950 classified as Carnegie stage 23 in Week 8.

Stage 23 Links: Week 8 | System Development | Lecture - Limb | Lecture - Head Development | Lecture - Sensory | Science Practical - Head | Science Practical - Sensory | Science Practical - Urogenital | Historic - Skull Development | Carnegie Embryos | Madrid Embryos | Category:Carnegie Stage 23 | Next Fetal Development
  Historic Papers: 1954 Stage 19-23


Serial No. Size (mm) Grade Fixative Embedding Medium Plane Thinness (µm) Stain Point Score Sex Year Notes
950 E, 29 Good Formol P Transverse 50 Al. coch. 54 Male 1914


Carnegie Collection - Stage 23 
Serial No. Size (mm) Grade Fixative Embedding Medium Plane Thinness (µm) Stain Point Score Sex Year Notes
45 E,28 Ch, 40x35x20 Poor  ? P Coronal/Transverse 50 Al. coch. 51.5 Female 1895
75 E,30 Good Alc. P Sagittal 50 Coch. 57 Male 1897
86 E,30 Good  ?  ? Coronal 50 Coch. Female 1897
100 E,27 Poor  ? P Sagittal 50 Al. coch. 57.5  ? 1897 May be an early fetus
108 E, 28 (est.) Poor Piurosulph. acid P Sagittal 45 Borax carm. 52.5 Female 1897
224 E30 Ch, 60x40x20 Poor Formol P Sagittal 50, 100 Al. coch. 54 Female 1903
417 E,32 Ch., 0x60x40 Good Formol P Transverse 100 Al. coch. 58.5 Male 1907
756A E, 27 Ch. 60x45x35 Good Formol P Coronal 50 Al. coch. 56 Female 1913
882 E , 28 Ch, 80x80x40 Good Formol P Transverse 40 Multiple 53 8 1913
950 E, 29 Good Formol P Transverse 50 Al. coch. 54 Male 1914
1199 E.,26 Ch,, 60x40x30 Good Formol C Coronal 40 (Stain - Haematoxylin Eosin) aur , or. G. 54.5 Male 1915
1535 E , 28 Ch. 50x45 x15 Poor Formol P Transverse 40 (Stain - Haematoxylin Eosin) 495 Male 1916
1945 E., 27.3 Ch., 83x53x22.5 Good Formol C-P Transverse 50 (Stain - Haematoxylin Eosin) aur., or. G. 48 Male 1917
2561 E., 27 .5 Good Formol C-P Transverse 25 (Stain - Haematoxylin Eosin) aur., or. G. 48 .5 3 1919
4205 E., 29.5 Good Bouin P Transverse 50 A1. coch. 55.5 Male 1923
4289 E., 32.2 Ch., 52x35x25 Good Formol P Transverse 15, 20 A1. coch., Mallory 59 Male 1923
4525 E., 30 Good Formol P Sagittal 20 (Stain - Haematoxylin Eosin) 57 1924
4570 E, 30.7 Ch., 52X50X28 Exc. Bouin P Transverse. 15 (Stain - Haematoxylin Eosin) , phlox. 55 1924
5154 E.,32 Good Bouin P Transverse 20 (Stain - Haematoxylin Eosin) 59.5 S 1926
5422 E., 27 Good Formol P Sagittal 40 (Stain - Haematoxylin Eosin) 52.5 Male 1927
5621A E., 27.5 Good Formol P Transverse 20 (Stain - Haematoxylin Eosin) 52.5 Male 1927 Other twin has spina bifida and fused kidneys
5725 E., 23 Good Formol P Coronal 25 (Stain - Haematoxylin Eosin) aur., or. G. 50.5 Male 1928
6573 E.,31.5 Good Bouin C Transverse 20 (Stain - Haematoxylin Eosin) 58.5 Male 1932
7425 E., 27 Exc. Bouin C-P Coronal 20 (Stain - Haematoxylin Eosin) 47 Male 1937 Ag added
9226 E., 31 Exc. Formol C—P Transverse 12 Azan  :> 3 1954
D.122 E, 27 Exc. . —/  ? Transverse 19 Ag . 1976 Yntema and Truex
Abbreviations
  • Size - E. is the greatest length of the embryo and Ch. is the mean diameter of the chorion.
  • Grade - total grade of the specimen and includes both its original quality and the condition of the mounted sections.
  • Embedding medium - paraffin (P) or a combination of celloidin and paraffin (C-P).
  • Fixative - formalin (Formol), alcohol and formalin (Alc, formol), Bouin (Bouin solution)
  • Stain -
  •  ? - unknown or not determined.



Muscle Development

"Almost all adult skeletal muscles of the trunk and limbs could be individually identified in their relative adult position. The pectoralis major muscle was divided in three separate muscle heads. The reconstructions showed remarkable highly developed extraocular, infrahyoid and suprahyoid muscles at this age but surprisingly also absence of the facial muscles that have been described to be present at this stage of development. The overall stage of muscle development suggests heterochrony of skeletal muscle development. Several individual muscle groups were found to be developed earlier and in more detail than described in current literature."[1]


References

  1. Warmbrunn MV, de Bakker BS, Hagoort J, Alefs-de Bakker PB & Oostra RJ. (2018). Hitherto unknown detailed muscle anatomy in an 8-week-old embryo. J. Anat. , , . PMID: 29726018 DOI.

Lineback PE. Studies on the longitudinal muscle of the human colon, with special reference to the development of the taeniae. (1920) Contrib. Embryol., Carnegie Inst. Wash. Publ. 50

Spaulding MH. The development of the external genitalia in the human embryo. (1921) Contrib. Embryol., Carnegie Inst. Wash. Publ. 81, 13: 69 – 88.


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Cite this page: Hill, M.A. (2018, June 22) Embryology Carnegie Embryo 950. Retrieved from https://embryology.med.unsw.edu.au/embryology/index.php/Category:Carnegie_Embryo_950

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© Dr Mark Hill 2018, UNSW Embryology ISBN: 978 0 7334 2609 4 - UNSW CRICOS Provider Code No. 00098G

Pages in category ‘Carnegie Embryo 950’

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