Category:Carnegie Embryo 576

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This Embryology category includes pages and images that relate to the Carnegie Collection Embryo No. 576.


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  Historic Papers: 1911 larynx | 1914 | 1954 Stage 19-23


Serial No. Size (mm) Grade Fixative Embedding Medium Plane Thinness (µm) Stain Score Sex Year Notes
576 E. 17 Ch, 60x40 Good Formol P Sagittal 15, 20 (Stain - Haematoxylin Eosin) 14.5 d 1912 Tubal

References

Streeter GL. The factors involved in the excavation of the cavities in the cartilaginous capsule of the ear in the human embryo. (1917) Amer. J Anat. 22: 1–25.

Kunitomo K. The development and reduction of the tail and of the caudal end of the spinal cord (1920) Contrib. Embryol., Carnegie Inst. Wash. Publ. 272, 9: 163-198.


Carnegie Collection - Stage 19 
Serial No. Size (mm) Grade Fixative Embedding Medium Plane Thinness (µm) Stain Score Sex Year Notes
17 E, 18 Ch, 40x30x20 Poor Alc. P 50, 100 Al. carm. 16.5 Male 1894
43 E, 16 Good Alc. P 50 Al. coch. 10 Male 1894
293 E, 19 Poor Ale. P Sagittal 50 Coch. 16.5 S 1905
390 E, 19 Good Formol? P Sagittal 20, (Stain - Haematoxylin Eosin) 11.5 Male 1906 Tubal Injected

50

409 E.18 Ch, 50x40x40 Good Formol P Transverse 20 Copper, iron H. & erythrosin 14.5 Male 1907
432 E..18.5 Ch , 45x35x20 Good Formol P Sagittal 20 H. & Congo red 13.5 Male 1910 Tubal
576 E. 17 Ch, 60x40 Good Formol P Sagittal 15, 20 (Stain - Haematoxylin Eosin) 14.5 d 1912 Tubal
626 E., 21.5 Ch., 40x30x21 Good Formol P Transverse 100 Al. coch. 14_5 6 1913
6??8 E, 20 Ch, ca. 30 Poor Formol P Sagittal 50 Al. coch. 12 9 1913 Head damaged
709 E, 19 Ch. 40x35x25 Poor Alc. P Coronal 40 Al. coch, Lyons blue 15 49 1913
837 E. 21 Ch. 65x45x Good Formol P Sagittal 40 Al. coch. 14.5 P 1914
1324 E., 18 50x30x18 Good Formol C Coronal 40 (Stain - Haematoxylin Eosin), aur, or. G 125 79 1915
1332 E., 19 Ch., 40x43x22 Poor Formol C Coronal 40 (Stain - Haematoxylin Eosin) aur, or. G. 15 Male 1915
1390 E., 18 Ch, 40x38x15 Good Formol P Sagittal 20 Al. coch. 10_5 Male 1915 Tubal
1534 E., 13 Ch.,35x31x25 Poor Formol P 53% 50 Al. coch. 13.5 F 1916 Protruding midbrain
2114 E., 19.3 Ch., 49x42x33 Good Formol P Transverse 40 A1. coch. 12 M 1918
4405 E., 15.5 Good Formol P Transverse 10 Coch, Mallory 13.5 <3 1923 Midbrain injured
4501 E, 18 Exc. Bouin P Transverse 15 Coch, or. G. 14.6 1924 Cystic left kidney
5609 E., 18 Exc. Formol P Coronal 25 A1. coch. 13.5 Male
6150 E., 17 Ch., 40x39x30 Good Bouin C-P Transverse 15 (Stain - Haematoxylin Eosin) 16.5 Male 1930 Tubal
6824 E., 18.5 Ch., 45x40x25 Good Formol C-P Sagittal 12 (Stain - Haematoxylin Eosin) 14.5 Female 1933
7900 E., 16.5 Good Bouin C-P Sagittal 20 (Stain - Haematoxylin Eosin), phlox. 11.5 . . 1941 Tubal
8092 E., 16.3 Ch., 52 x 47 Exc. Bouin C-P Transverse 20 (Stain - Haematoxylin Eosin), phlox. 13 Male 1942
8913 E.,? Ch, 34 Poor Formol p Transverse 10 Alan . 7 1951 Rubella. Medical abortion. Isolated head damaged
8965 E, 19.1 Ch, 42x32x19 Good Formol—Zenker C-P Transverse 10 Borax, carm, or. G. 1952 Univ. Chicago No. H 173
9097 E, 21 Exc. Formol—glucose C-P Coronal 10 Azan ? . ? 1930 Univ. Chicago No H 1380
9113 E, 185 Ch, 24 Exc. Formol C-P Transverse 10 Alan > 6 1953 Rubella. Medical abortion
9325 E, 17.0 Ch, 32x28x20 Good Formol —acetic p Transverse 15& 8-10 Azan & Ag ? - 1955 Tubal
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.


Embryo No. 576, 17 mm Crown-Rump Length

Kunitomo K. The development and reduction of the tail and of the caudal end of the spinal cord (1920) Contrib. Embryol., Carnegie Inst. Wash. Publ. 272, 9: 163-198.

This embryo has 35 cartilaginous vertebrae, the last consisting of three small pieces fused together. The demarcation between these pieces can be more clearly recognized in the lateral portions of the column than in the median plane; so in determining the composition of the last segment one nuist study carefully the more lateral line of sections. A profile reconstruction of the embryo is shown in figure 3<S, and a more diagrammatic sketch in figure 10. The tail, with the caudal end of the .spinal cord, is bent shari)ly dor.salward. The spinal cord narrows suddenly at the thirty-second vertebra anil from this point down the central canal, which extends the entire length of the cord, becomes much smaller and rounder, while in the more cranial portion a transverse section of it would form an elongated oval. The ventral wall of the canal in the atrophic jiortion presents several transverse folds, as seems to be usually the case at this stage of reduction. The caudal portion of the chorda dorsalis is convoluted and its end sharply retracted.


Cite this page: Hill, M.A. (2019, September 22) Embryology Carnegie Embryo 576. Retrieved from https://embryology.med.unsw.edu.au/embryology/index.php/Category:Carnegie_Embryo_576

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