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FIG. 34. Sectional plan of the gravid uterus in the third and fourth month

(Modified from Wagner) Cartoon is inaccurate, as by this stage the amnion and chorion would be fused.

  • Decidua Basalis - part of the maternal mucosa to which the chorion frondosum is attached, it is convenient to consider the two structures together.
  • Decidua Capsularis - part of the maternal mucosa that covers the conceptus chorion laeve
  • Decidua Parietalis - the remainder of the maternal uterine mucosa away from the site of implantation.

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

Cite this page: Hill, M.A. (2024, April 12) Embryology Gray0034.jpg. Retrieved from

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current23:42, 3 June 2012Thumbnail for version as of 23:42, 3 June 2012800 × 613 (98 KB)Z8600021 (talk | contribs)==Sectional plan of the gravid uterus in the third and fourth month== (Modified from Wagner.) Inaccurate, as by this stage the amnion and chorion would be fused. {{Gray Anatomy}} Category:Fetal Category:Human Fetus Category:Placenta