File:Streeter01.jpg

Fig. 1. Normal fetuses showing the three grades under which they are grouped

A, grade 1, fetus No. 1183; CR length 60 mm., weight 19.5 grams

B, grade 2, fetus No. 1282b, CR length 65.5 mm., weight I5 grams

C, grade 3, No. 1210, CR length 66 mm., weight 14.2 grams.

A is shorter and manifestly younger than the other two, but owing to its extreme distention by formalin, it weighs more.

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Pages where the terms "Historic" (textbooks, papers, people, recommendations) appear on this site, and sections within pages where this disclaimer appears, indicate that the content and scientific understanding are specific to the time of publication. This means that while some scientific descriptions are still accurate, the terminology and interpretation of the developmental mechanisms reflect the understanding at the time of original publication and those of the preceding periods, these terms, interpretations and recommendations may not reflect our current scientific understanding.     (More? Embryology History | Historic Embryology Papers)

Embryo Size Links: Fig. 1 Fetus grades | Fig. 2 Measuring Instrument | Table 1 sitting height and weight | Table 2 Weight | Table 3 variation height and weight | Table 4 Foot length | Table 5 Head modulus | Table 6 embryos less than 10 grams | Table 7 Page 1 embryos more than 10 grams | Table 7 Page 2 embryos more than 10 grams | Table 7 Page 3 embryos more than 10 grams | Table 7 Page 4 embryos more than 10 grams | Table 7 Page 5 embryos more than 10 grams | Table 7 Page 6 embryos more than 10 grams | Table 7 Page 7 embryos more than 10 grams | Table 7 Page 8 embryos more than 10 grams | Table 7 Page 9 embryos more than 10 grams | Table 7 Page 10embryos more than 10 grams | Chart 1 crown-rump length | Chart 2 curve of growth | Chart 3 Foot length and head modulus | Chart 4 Carnegie Collection over 200 grams | Chart 5 weight and head modulus | Contributions to Embryology

Reference

Streeter GL. Weight, sitting height, head size, foot length, and menstrual age of the human embryo. (1920) Contrib. Embryol., Carnegie Inst. Wash. Publ. , : 143-170.

Cite this page: Hill, M.A. (2024, April 18) Embryology Streeter01.jpg. Retrieved from https://embryology.med.unsw.edu.au/embryology/index.php/File:Streeter01.jpg

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© Dr Mark Hill 2024, UNSW Embryology ISBN: 978 0 7334 2609 4 - UNSW CRICOS Provider Code No. 00098G