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The placenta (: placentas or placentae) is a temporary embryonic and later fetal organ that begins developing from the blastocyst shortly after implantation. It plays critical roles in facilitating nutrient, gas, and waste exchange between the physically separate maternal and fetal circulations, and is an important endocrine organ, producing hormones that regulate both maternal and fetal physiology during pregnancy. The placenta connects to the fetus via the umbilical cord, and on the opposite aspect to the maternal uterus in a species-dependent manner. In humans, a thin layer of maternal deci

AI overview

The placenta is a temporary organ that develops during pregnancy to connect a developing fetus to the uterus and facilitate the exchange of nutrients, oxygen, and waste between mother and baby. It also produces hormones that regulate the physical changes needed to support pregnancy in both mother and fetus.

AI-generated from the Wikipedia summary — may contain errors.

Key facts

Embryology.Name: Placenta
Embryology.Latin: placenta
Embryology.Image: Healthy Placenta.jpg
Embryology.Caption: Human placenta from just after birth with the umbilical cord in place
Embryology.Image2: Placenta.svg
Embryology.Caption2: Human placenta shown in uterus connected to fetus with umbilical cord
Embryology.Precursor: Decidua basalis, chorion frondosum

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Research

126,008 papers

Placenta: the forgotten organ.ReviewAnnual review of cell and developmental biology · 2015Maltepe E, Fisher SJDOI: 10.1146/annurev-cellbio-100814-125620
Revealing the molecular landscape of human placenta: a systematic review and meta-analysis of single-cell RNA sequencing studies.Human reproduction update · 2024Derisoud E, Jiang H, Zhao A et al.DOI: 10.1093/humupd/dmae006
Spatial multiomic landscape of the human placenta at molecular resolution.Nature medicine · 2024Ounadjela JR, Zhang K, Kobayashi-Kirschvink KJ et al.DOI: 10.1038/s41591-024-03073-9
Placenta accreta spectrum disorder at single-cell resolution: a loss of boundary limits in the decidua and endothelium.American journal of obstetrics and gynecology · 2024Afshar Y, Yin O, Jeong A et al.DOI: 10.1016/j.ajog.2023.10.001
The Placenta's Role in Sexually Dimorphic Fetal Growth Strategies.ReviewReproductive sciences (Thousand Oaks, Calif.) · 2022Christians JKDOI: 10.1007/s43032-021-00780-3
Human Placenta and Evolving Insights into Pathological Changes of Preeclampsia: A Comprehensive Review of the Last Decade.ReviewFetal and pediatric pathology · 2024Chiorean DM, Cobankent Aytekin E, Mitranovici MI et al.DOI: 10.1080/15513815.2023.2274823
The placenta dilemma.ReviewSeminars in reproductive medicine · 2000Fisher SJDOI: 10.1055/s-2000-12569
Melatonin: the placental antioxidant and anti-inflammatory.ReviewFrontiers in immunology · 2024Joseph TT, Schuch V, Hossack DJ et al.DOI: 10.3389/fimmu.2024.1339304

Wikidata facts

Part of: placental expulsion
Image: Human placenta baby side.jpg

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described by source: Encyclopædia Britannica 11th edition
Commons category: Placenta
Commons gallery: Placenta
native label: Placenta
topic's main category: Category:Placenta
facet of: women's health

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