BGDA Practical - Placenta and Fetal Membranes

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Practical 14 - Placenta and Fetal Membranes

Introduction

From implantation through the remainder of prenatal development the parts of the conceptus that did not contribute to the embryo now develop and differentiate in parallel to form the embryonic placenta and the fetal membranes. Remember that the placenta has a dual origin from both fetal and maternal contributions.


Clinically, the placenta is first observed by ultrasound and both the site of formation and its development are critical to fetal development. The placenta and the fluid within the fetal membranes, are an important diagnostic tool for the genetic status of the fetus. At birth, in recent years, the cells derived from the placental cord are now an important source of “cord stem cells”. These will eventually have many clinical therapeutic applications.

Aim

Spiegel and Casseri: De formato foetu liber singularis (Dedication dated 1626).

To understand the development, anatomy and histology of the placenta and the fetal membranes.


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Practical 14: Implantation and Early Placentation | Villi Development | Maternal Decidua | Cord Development | Placental Functions | Diagnostic Techniques | Abnormalities


Key Concepts

Implantation, uterine changes (endometrium to decidua), early placentation (cytotrophoblast and syncitiotrophoblast cells), villi development, placental cord, placental function, placental membranes, abnormalities.


Textbooks

Embryo logo
Hill, M.A. (2020). UNSW Embryology (20th ed.) Retrieved March 28, 2024, from https://embryology.med.unsw.edu.au
Placenta Links: placenta | Lecture - Placenta | Lecture Movie | Practical - Placenta | implantation | placental villi | trophoblast | maternal decidua | uterus | endocrine placenta | placental cord | placental membranes | placenta abnormalities | ectopic pregnancy | Stage 13 | Stage 22 | placenta histology | placenta vascular | blood vessel | cord stem cells | 2013 Meeting Presentation | Placenta Terms | Category:Placenta
Historic Embryology - Placenta 
1883 Embryonic Membranes | 1907 Development Atlas | 1909 | 1910 Textbook | 1917 Textbook | 1921 Textbook | 1921 Foetal Membranes |1921 human | 1921 Pig implantation | 1922 Single placental artery | 1923 Placenta Review | 1939 umbilical cord | 1943 human and monkey | 1944 chorionic villus and decidua parietalis | 1946 placenta ageing | 1960 first trimester placenta | 1960 monkey | 1972 Placental circulation | Historic Disclaimer
| 2013 Meeting Presentation
Historic Embryology - Placenta 
1883 Embryonic Membranes | 1907 Development Atlas | 1909 | 1910 Textbook | 1917 Textbook | 1921 Textbook | 1921 Foetal Membranes |1921 human | 1921 Pig implantation | 1922 Single placental artery | 1923 Placenta Review | 1939 umbilical cord | 1943 human and monkey | 1944 chorionic villus and decidua parietalis | 1946 placenta ageing | 1960 monkey | 1972 Placental circulation | Historic Disclaimer
The Developing Human, 10th edn.jpg
Moore, K.L., Persaud, T.V.N. & Torchia, M.G. (2015). The developing human: clinically oriented embryology (10th ed.). Philadelphia: Saunders.

Chapter 7 Placenta and Fetal Membranes

Chapter 22 Appendix : Discussion of Clinically Oriented Problems


Practical Class Note

  • The term used when referring to the cord and its associated vessels (arteries and vein) can be either placental or umbilical.
  • Material under the heading "Additional Information" on each page is not part of today's practical and is provided as supporting information only.
  • Virtual slides - there will be 2 virtual slides used in this practical class.
  • Specimens - there is a whole fixed placenta and uterus specimen available.
  • Models - there are a range of models showing early placentation and placenta structure available.

Placenta term anatomy 01.jpg

Moodle icon2.jpg Moodle Lab Slides

Note - Moodle icon links appearing below on this page go directly to Lab Slide.
(you must be logged in to Moodle) I will be adding links to annotated slides after today's practical.


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Practical 14: Implantation and Early Placentation | Villi Development | Maternal Decidua | Cord Development | Placental Functions | Diagnostic Techniques | Abnormalities


Additional Information

Additional Information - Content shown under this heading is not part of the material covered in this class. It is provided for those students who would like to know about some concepts or current research in topics related to the current class page.



Placenta Links: placenta | Lecture - Placenta | Lecture Movie | Practical - Placenta | implantation | placental villi | trophoblast | maternal decidua | uterus | endocrine placenta | placental cord | placental membranes | placenta abnormalities | ectopic pregnancy | Stage 13 | Stage 22 | placenta histology | placenta vascular | blood vessel | cord stem cells | 2013 Meeting Presentation | Placenta Terms | Category:Placenta
Historic Embryology - Placenta 
1883 Embryonic Membranes | 1907 Development Atlas | 1909 | 1910 Textbook | 1917 Textbook | 1921 Textbook | 1921 Foetal Membranes |1921 human | 1921 Pig implantation | 1922 Single placental artery | 1923 Placenta Review | 1939 umbilical cord | 1943 human and monkey | 1944 chorionic villus and decidua parietalis | 1946 placenta ageing | 1960 first trimester placenta | 1960 monkey | 1972 Placental circulation | Historic Disclaimer


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Cite this page: Hill, M.A. (2024, March 28) Embryology BGDA Practical - Placenta and Fetal Membranes. Retrieved from https://embryology.med.unsw.edu.au/embryology/index.php/BGDA_Practical_-_Placenta_and_Fetal_Membranes

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