From Embryology

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Fig. 484. Diagrams representing stages in the development of the foetal membranes in the chick


  • a - Transverse section.
  • b, c, d - longitudinal sections.
  • yolk represented by vertical lines.
  • dotted line represents edge of entoderm.


al., Allantois; am., amnion; am. c., amniotic cavity; cce., coelom; dh., vitelline area between two dotted lines which represent the edge of the mesoderm (at s. /.) and entoderm (at z. g.)\ dg., yolk stalk; ds., yolk sac; d.umb., dermal umbilicus; ect., ectoderm; ent., entoderm; ex. b. c., extraembryonic body cavity; gh., area vasculosa;, head amniotic fold; m., mouth; p,mes., parietal mesoderm; s. t., sinus terminalis; ser., serosa (chorion);,, tail amniotic fold; umb., umbilicus; v mes., visceral mesoderm; z. g.

Text-Book of Embryology: Germ cells | Maturation | Fertilization | Amphioxus | Frog | Chick | Mammalian | External body form | Connective tissues and skeletal | Vascular | Muscular | Alimentary tube and organs | Respiratory | Coelom, Diaphragm and Mesenteries | Urogenital | Integumentary | Nervous System | Special Sense | Foetal Membranes | Teratogenesis | Gallery of All Figures
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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)


Bailey FR. and Miller AM. Text-Book of Embryology (1921) New York: William Wood and Co.

Cite this page: Hill, M.A. (2024, June 23) Embryology Bailey484.jpg. Retrieved from

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Yi efo/eka'e gwa ebo wo le nyangagi wuncin ye kamina wunga tinya nan

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