BGDA Practical Placenta - Placental Functions

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



Human term placental volumes sorted by size (from table).

Morphometric indices at term of placental composition, villous capillarization and the mean cross-sectional areas of peripheral villi and capillaries, data from a study sample of 15 normal placenta (mean placental volume, 652 ml). [1][2]

Variable Unit Placenta (mean, n = 15)
Intervillous space mL 213
Stem villi mL 71.4
Peripheral villi mL 326
Trophoblast mL 95.5
Stroma mL 184
Fetal capillaries mL 46.9
Non-parenchyma mL 41.5
Peripheral villi km 89.2
Fetal capillaries km 310
TS area villi µm2 3700
TS area capillary µm2 150
Capillaries mL mL-1 0.147
Length ratio km km-1 3.6


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
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Cite this page: Hill, M.A. (2024, March 29) Embryology BGDA Practical Placenta - Placental Functions. Retrieved from https://embryology.med.unsw.edu.au/embryology/index.php/BGDA_Practical_Placenta_-_Placental_Functions

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© Dr Mark Hill 2024, UNSW Embryology ISBN: 978 0 7334 2609 4 - UNSW CRICOS Provider Code No. 00098G
  1. <pubmed>18328557</pubmed>
  2. <pubmed>19141109</pubmed>