Anatomy

Placenta

A highly vascularized mammalian fetal-maternal organ and major site of transport of oxygen, nutrients, and fetal waste products. It includes a fetal portion (CHORIONIC VILLI) derived from TROPHOBLASTS and a maternal portion (DECIDUA) derived from the uterine ENDOMETRIUM. The placenta produces an array of steroid, protein and peptide hormones (PLACENTAL HORMONES).

National Library of MedicineMedical Subject Headings2026

Structured Summary

Abstract

A highly vascularized mammalian fetal-maternal organ and major site of transport of oxygen, nutrients, and fetal waste products. It includes a fetal portion (CHORIONIC VILLI) derived from TROPHOBLASTS and a maternal portion (DECIDUA) derived from the uterine ENDOMETRIUM. The placenta produces an array of steroid, protein and peptide hormones (PLACENTAL HORMONES).

MeSH Record

Classification

Related Concepts

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MeSH Record

See Also

MeSH Record

Synonyms

4 entry terms
  • Placentome
  • Placentas
  • Placentomes
  • Placentoma, Normal

MeSH Record

Aspects Covered

23 allowable subheadings

Indexed with the subheadings abnormalities, anatomy & histology, blood supply, chemistry, cytology, diagnostic imaging, drug effects, embryology, enzymology, immunology, injuries, innervation, metabolism, microbiology, parasitology, pathology, physiology, physiopathology, radiation effects, surgery, transplantation, ultrastructure, virology.

MeSH Record

Indexing Annotation

mammals only; /blood supply: consider PLACENTAL CIRCULATION; placental serum or placental blood = PLACENTA + BLOOD

MeSH Hierarchy

Tree Number

  1. A16.710w

MeSH Record

NLM Classification

WQ 212

AMA Style

References

  1. National Library of Medicine. Placenta. Medical Subject Headings (MeSH). 2026. Unique ID D010920. http://id.nlm.nih.gov/mesh/2026/D010920
  2. Placenta. In: Wikipedia. https://en.wikipedia.org/wiki/Placenta
  3. Placenta. In: Wikidata. https://www.wikidata.org/wiki/Q1212935