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Intermediate Mesoderm Development - Anatomy & Physiology (view source)
Revision as of 14:39, 31 August 2008
, 14:39, 31 August 2008→Mesonephros
#*Excretory duct now known as the '''Wolffian Duct'''.
#*Excretory duct now known as the '''Wolffian Duct'''.
*Amphibians and fish use the mesonephric kidney.
*Amphibians and fish use the mesonephric kidney.
==Metanephros==
*''Formation of the metanephros employs recipricol signalling''.
#At the level of the sacrum, a block of intermediate mesoderm breaks off from the Wolffian duct. It is called a '''metanephric blastema'''.
#The metanephric blastema signals to the Wolffian duct.
#*Wolffian duct is induced to grow, and a bud of Wolffian duct moves towards the metanephric blastema.
#*The bud is called the '''ureteric duct'''.
#The ureteric duct contacts the blastema, and divides into two branches.
#One of the branches induces adjacent mesenchyme to undergo a mesenchymal to epithelial transition.
#*It subsequently develops into a nephron.
#The remaining branch splits into two, and repeats the process.