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Human Embryo Day 8 to 9
Section through ovum imbedded in the uterine decidua. Semidiagrammatic. (After Peters.) original figure title
- am. - amniotic cavity
- b.c. - blood clot, at the site of initial implantation
- b.s. - body-stalk, or connective stalk later forming the placental cord region with placental blood vessels
- ect. - embryonic ectoderm that will contribute to embryonic and placental membrane development
- ent. - entoderm (endoderm), this was the historic term for what we today call endoderm that will contribute to embryo development
- mes. - mesoderm, consisting of both embryonic mesoderm (in the trilaminar embryonic disc) and extraembryonic mesoderm (outside the trilaminar embryonic disc)
- m.v. - maternal vessels, spiral arteries that have been opened at their ends
- tr. - trophoblast, relative to the embryonic disc the outer syncitiotrophoblast and inner cytotrophoblast layers that will contribute to placental development
- u.e. - uterine epithelium, the epithelial layer that lines the unerus
- u.g. - uterine glands, the glands that secrete nutrients to support the initial growth both before and after implantation
- y.s. - yolk-sac, the endoderm lined and extraembryonic mesoderm covered cavity that will contribute to the gastrointestinal tract, blood and blood vessels
- Links: Large image version | Implantation | Week 2
- Gray's Images: Development | Lymphatic | Neural | Vision | Hearing | Somatosensory | Integumentary | Respiratory | Gastrointestinal | Urogenital | Endocrine | Surface Anatomy | iBook | Historic Disclaimer
Historic Disclaimer - information about historic embryology pages |
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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) |
iBook - Gray's Embryology | |
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Reference
Gray H. Anatomy of the human body. (1918) Philadelphia: Lea & Febiger.
Cite this page: Hill, M.A. (2024, May 21) Embryology Gray0032.gif. Retrieved from https://embryology.med.unsw.edu.au/embryology/index.php/File:Gray0032.gif
- © Dr Mark Hill 2024, UNSW Embryology ISBN: 978 0 7334 2609 4 - UNSW CRICOS Provider Code No. 00098G
File history
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 17:04, 17 August 2009 | 500 × 417 (57 KB) | MarkHill (talk | contribs) | Section through ovum imbedded in the uterine decidua. Semidiagrammatic. (After Peters.) * am. Amniotic cavity * b.c. Blood-clot * b.s. Body-stalk. * ect. Embryonic ectoderm * ent. Entoderm * mes. Mesoderm. * m.v. Maternal vessels. * tr. Trophoblast. |
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