Mesonephric duct

Mesonephric duct (also known as Wolffian duct, archinephric duct, segmental duct) is a structure present in the embryonic development of mammals. It is one of the three parts of the primitive kidney, or pronephros, the others being the mesonephros and the metanephros. The mesonephric duct connects the primitive kidney to the cloaca, a structure that will eventually form the urinary and reproductive organs.

Etymology

The term "mesonephric" is derived from the Greek words "mesos" (middle) and "nephros" (kidney). The term "Wolffian duct" is named after the German anatomist and physiologist Caspar Friedrich Wolff who first described the structure.

Development

The mesonephric duct develops in the intermediate mesoderm adjacent to the developing gonads. It forms from the upper part of the urogenital ridge. The duct extends caudally, eventually connecting with the cloaca.

In males, the mesonephric ducts will go on to form the seminal vesicles, vas deferens, and epididymis. In females, the mesonephric ducts degenerate due to the absence of testosterone, but some remnants may persist as the Gartner's duct.

Clinical significance

Abnormalities in the development of the mesonephric duct can lead to a variety of congenital disorders. These include renal agenesis, renal dysplasia, and hermaphroditism.

See also

• Pronephros
• Mesonephros
• Metanephros
• Gartner's duct

References

Mesonephric duct Resources
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