Intermediate mesoderm

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Intermediate mesoderm
Gray19 with color.png
Transverse section of a chick embryo of forty-five hours’ incubation.
* Chordamesoderm: yellow, at notochord.
* Paraxial mesoderm: red, at somite.
* Intermediate mesoderm: purple, near Wolffian duct.
* Lateral plate mesoderm: purple, including "Somatic mesoderm" and "Splanchic mesoderm".
Gives rise toWolffian duct
Latinmesenchyma intermedium
Anatomical terminology

Intermediate mesenchyme or intermediate mesoderm is a type of mesoderm (an embryological tissue) that is located between the paraxial mesoderm and the lateral plate.

It develops into the part of the urogenital system (kidneys and gonads), as well as the reproductive system.

  • forms of urogenital system
  • series of short evaginations from each segment grows dorsally caudally
  • vestiges of the future kidney, the pronephros briefly appears.
  • pronephric duct arises in the intermediate mesoderm just ventral to the anterior somites
  • grows caudally until it becomes the cloaca.
  • it is distinct from the lateral mesoderm, as it is not influenced by the secretion of BMP-4 by the ectoderm, possibly due to the lack of receptors.

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This article incorporates text in the public domain from page 50 of the 20th edition of Gray's Anatomy (1918)

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