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Fig. 24. Diagram showing earliest observed stage of human ovum

Diagram showing earliest observed stage of human ovum.

--Mark Hill (talk) 12:38, 25 April 2013 (EST) This very simplified cartoon shows extra-embryonic coeloms (spaces), and the layers that contribute to each enclosing membrane, that surround the early bilaminar embryonic disc.

Note the historic term for the conceptus at this stage was "ovum".

Early embryo membrane development cartoons: Image 24 | Image 25 | Image 26 | Image 27 | Image 28

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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)
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Gray H. Anatomy of the human body. (1918) Philadelphia: Lea & Febiger.

Cite this page: Hill, M.A. (2024, May 21) Embryology Gray0024.jpg. Retrieved from

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

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current11:34, 22 April 2013Thumbnail for version as of 11:34, 22 April 2013500 × 500 (20 KB)Z8600021 (talk | contribs)==Embryo Week 3== Diagram showing earliest observed stage of human ovum. {{Gray Anatomy}} Category:Week 3 Category:Cartoon