Paper - Two choice human embryos at Streeter's horizons XI and XIV
|Embryology - 19 Oct 2019 Expand to Translate|
Wells LJ. and Kaiser IH. Two choice human embryos at Streeter's horizons XI and XIV. (1959) Obstet Gynecol., 14: 411-6 PMID 13843903
|Carnegie stage 11 and Carnegie stage 14. The online version currently contains just an abstract. George Streeter
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Two Choice Human Embryos at Streeter’s Horizons XI and XIV
Lemen J. Wells, Ph.D., And Irwin H. Kaiser, M.D., Ph.D.
From the Departments of Anatomy and Obstetrics and Gynecology, University of Minnesota, Minneapolis, Minn.
- Aided by grants from the National Institutes of Health (A-1244) and from the Medical Research Fund of the Graduate School of the University of Minnesota.
Human embryologic material in superb condition is still relatively rare. The two specimens to be presented here were obtained by hysterectomy and were fixed while still alive by opening the chorionic sacs under 10 per cent formalin. Their anatomic relations to the embryonic membranes and to the deciduas were deliberately retained.
The ventral views herein illustrated are desirable supplements to the lateral and dorsal views that are usually presented in textbooks of human embryology. Four other factors contributed, however, to our decision to present ventral views: both implantations were posterior (dorsal); the capsular deciduas and chorionic sacs were opened anteriorly (ventrally); the body stalks were not severed; the specimens are being used as excellent additions to the demonstrations for a medical course in human embryology.
Fig. 1. Case I. In this block of endometriurn from the posterior uterine wall, the embryonic membranes and embryo have been exposed by incision of the decidua capsularis and chorion and reflection of the flap (hinged upward in drawing).
Fig. 4. Case 2. In this block of endometrium from the posterior uterine wall, the embryonic membranes and embryo have been exposed by a large window mode in the deciduo copsularis and chorion.
Cite this page: Hill, M.A. (2019, October 19) Embryology Paper - Two choice human embryos at Streeter's horizons XI and XIV. Retrieved from https://embryology.med.unsw.edu.au/embryology/index.php/Paper_-_Two_choice_human_embryos_at_Streeter%27s_horizons_XI_and_XIV
- © Dr Mark Hill 2019, UNSW Embryology ISBN: 978 0 7334 2609 4 - UNSW CRICOS Provider Code No. 00098G