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==Human Term Placental Villi==
==Human Term Placental Villi==


* The villi at term lack the earlier intactcytotrophoblast shell and have syncitotrophoblast cells (purple) attached in clumps.
* Placental villi at term.
* Majority of villi core occupied by blood vessels with small amount of surrounding mesenchyme.
* Surface layer of vill now lack cytotrophoblast cell layer and now are covered with only a syncitotrophoblast layer (shell).
* The fetal red blood cells now also lack the earlier distinctive nuclei.
* Syncitotrophoblast layer is variable in thickness from a thin cytoplasmic layer to regions of clumped nuclei.
* Vill core mainly occupied by fetal capillaries and larger blood vessels, with only a small amount of connective tissue.
* Fetal red blood cells now appear to lack the earlier distinctive nuclei.




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original file name Pll20he.jpg  
original file name Pll20he.jpg  
[[Category:Human Fetus]] [[Category:Placenta]] [[Category:Histology]]
[[Category:Human Fetus]][[Category:Third Trimester]] [[Category:Placenta]] [[Category:Histology]]

Latest revision as of 21:43, 8 October 2015

Human Term Placental Villi

  • Placental villi at term.
  • Surface layer of vill now lack cytotrophoblast cell layer and now are covered with only a syncitotrophoblast layer (shell).
  • Syncitotrophoblast layer is variable in thickness from a thin cytoplasmic layer to regions of clumped nuclei.
  • Vill core mainly occupied by fetal capillaries and larger blood vessels, with only a small amount of connective tissue.
  • Fetal red blood cells now appear to lack the earlier distinctive nuclei.


Villi Histology: First trimester (overview | villi | detail) | fetal and maternal RBCs | Term (overview | villi | detail) | Cord Histology | Placenta Histology | Placenta Development



Links: Histology | Histology Stains | Blue Histology images copyright Lutz Slomianka 1998-2009. The literary and artistic works on the original Blue Histology website may be reproduced, adapted, published and distributed for non-commercial purposes. See also the page Histology Stains.


Cite this page: Hill, M.A. (2024, March 28) Embryology Placental villi 4.jpg. Retrieved from https://embryology.med.unsw.edu.au/embryology/index.php/File:Placental_villi_4.jpg

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


original file name Pll20he.jpg

File history

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Date/TimeThumbnailDimensionsUserComment
current03:42, 1 April 2012Thumbnail for version as of 03:42, 1 April 20121,280 × 1,024 (89 KB)Z8600021 (talk | contribs)
18:54, 30 March 2012Thumbnail for version as of 18:54, 30 March 20121,280 × 1,024 (206 KB)Z8600021 (talk | contribs)
17:38, 3 August 2009Thumbnail for version as of 17:38, 3 August 20091,280 × 1,024 (226 KB)MarkHill (talk | contribs)Human placental villi cross-section placenta, term, human H&E x40 reproductive system, female, chorionic villi original file name Pll20he.jpg Image Source: UWA Blue Histology http://www.lab.anhb.uwa.edu.au/mb140/CorePages/FemaleRepro/femalerepro.htm