Category:Carnegie Embryo 576

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

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	Formalin	P	Transverse	20	Copper, iron H. & erythrosin	14.5	Male	1907
432	E..18.5 Ch , 45x35x20	Good	Formalin	P	Sagittal	20	H. & Congo red	13.5	Male	1910	Tubal
576	E. 17 Ch, 60x40	Good	Formalin	P	Sagittal	15, 20	(Stain - Haematoxylin Eosin)	14.5	d	1912	Tubal
626	E., 21.5 Ch., 40x30x21	Good	Formalin	P	Transverse	100	Al. coch.	14_5	6	1913
6??8	E, 20 Ch, ca. 30	Poor	Formalin	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	Formalin	P	Sagittal	40	Al. coch.	14.5	P	1914
1324	E., 18 50x30x18	Good	Formalin	C	Coronal	40	(Stain - Haematoxylin Eosin), aur, or. G	125	79	1915
1332	E., 19 Ch., 40x43x22	Poor	Formalin	C	Coronal	40	(Stain - Haematoxylin Eosin) aur, or. G.	15	Male	1915
1390	E., 18 Ch, 40x38x15	Good	Formalin	P	Sagittal	20	Al. coch.	10_5	Male	1915	Tubal
1534	E., 13 Ch.,35x31x25	Poor	Formalin	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	Formalin	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.	Formalin	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	Formalin	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	Formalin	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.	Formalin	C-P	Transverse	10	Alan > 6			1953	Rubella. Medical abortion
9325	E, 17.0 Ch, 32x28x20	Good	Formalin	—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. (2024, April 23) Embryology Carnegie Embryo 576. Retrieved from https://embryology.med.unsw.edu.au/embryology/index.php/Category:Carnegie_Embryo_576

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