Category:Carnegie Embryo 837

From Embryology

This Embryology category shows pages and images that relate to the Carnegie Collection Embryo No. 837. This 18 mm embryo was classified as Carnegie stage 19 occurring during Week 8.


Stage 19 Links: Week 7 | System Development | Lecture - Limb | Lecture - Head Development | Lecture - Sensory | Science Practical - Head | Science Practical - Sensory | Science Practical - Urogenital | Carnegie Embryos | Madrid Embryos | Category:Carnegie Stage 19 | Next Stage 20
  Historic Papers: 1911 larynx | 1914 | 1954 Stage 19-23


Serial No. Size (mm) Grade Fixative Embedding Medium Plane Thinness (µm) Stain Point Score Sex Year Notes
837 E. 21 Ch. 65x45x Good Formol P Sag. 40 Al. coch. 14.5 P 1914

References

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.

Streeter GL. Developmental Horizons In Human Embryos Description Or Age Groups XIX, XX, XXI, XXII, And XXIII, Being The Fifth Issue Of A Survey Of The Carnegie Collection. (1957) Carnegie Instn. Wash. Publ. 611, Contrib. Embryol., 36: 167-196.


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 M 1894
43 E, 16 Good Alc. P 50 Al. coch. 10 M 1 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 M 1906 Tubal Injected

50

409 E.18 Ch, 50x40x40 Good Formol P Transverse 20 Copper, iron H. & erythrosin 14.5 M 1907
432 E..18.5 Ch , 45x35x20 Good Formol P Sagittal 20 H. & Congo red 13.5 M 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 M 1915
1390 E., 18 Ch, 40x38x15 Good Formol P Sagittal 20 Al. coch. 10_5 M 1915 Tubal
1534 E., 13 Ch.,35x31x25 Poor Formol P 53% 50 Al. coch. 13.5 F 1916 Protruding midbratn
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 M
6150 E., 17 Ch., 40x39x30 Good Bouin C-P Transverse 15 (Stain - Haematoxylin Eosin) 16.5 M 1930 Tubal
6824 E., 18.5 Ch., 45x40x25 Good Formol C-P Sagittal 12 (Stain - Haematoxylin Eosin) 14.5 F 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 M 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. Fo1rno1—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. 837, 21 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.

Embryo No. 837 has 35 cartilaginous vertebrae, but the last is very small and its transition into cartilage is just beginning. It is surrounded by a voluminous mass of precartilaginous tissue resulting from the fusion of the last few scleromeres. The caudal piul of tlio fliordti dorsalis projects from the oxtrciiic (mkI of the vcrtol)nil foluinii into the region of the non-vertebrated tail and :ipiK>ars as if previously it may have adhered to the wall of the caudal end of the neural tube. In the thirty-fourth vertebra, and between tiie thirty-fourth and thirty-third, the chorda shows a typical loop formation, while iu its main portion it is almost straight and is situated in the midline of the column. The central canal of the spinal cord narrows sharply at the level of the thirty-second vertebra. Its ventral wall shows a few folds in the region of the atrophic portion of the cord. The spinal cord reaches to the tip of the tail and has a continuous canal thoughout. The middle sacral artery and vein extend into the non-vertebrated portion of the tail.


Cite this page: Hill, M.A. 2017 Embryology Carnegie Embryo 837. Retrieved November 24, 2017, from https://embryology.med.unsw.edu.au/embryology/index.php/Category:Carnegie_Embryo_837

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