Metanephros

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metanephros

[‚med·ə′ne‚fräs]
(embryology)
One of the posterior of three pairs of vertebrate renal structures; persists as the definitive or permanent kidney in adult reptiles, birds, and mammals.

Metanephros

 

a paired excretory organ in reptiles, birds, mammals, and man that replaces the mesonephros in the course of embryonic development.

The uriniferous tubules of the metanephros form from the nonsegmented posterior part of the nephrotome; unlike the uriniferous tubules of the mesonephros, they begin at the malpighian corpuscles. The ends of the tubules of the metanephros open not into the wolffian duct, as in the mesonephros, but into the ureter, an outgrowth of it.

References in periodicals archive ?
The researchers could then differentiate them further into cells expressing SIX2, SALL1, and WTI, important markers of the metanephric cap mesenchyme, a critical stage of kidney differentiation.
The researchers could then differentiate them further into cells expressing SIX2, SALL1, and WT1, important markers of the metanephric cap mesenchyme, a critical stage of kidney differentiation.
Whereas Wilms' tumor is observed in young children (0-5 years) with a single renal mass, renal cell carcinoma, metanephric adenoma, solitary angiomyolipoma, and focal infections are observed in older children (after 5 years).
Development of the kidney is reported to be the result of interactions between the metanephric and ureteric bud mesenchyme in the presence of retinoids (Vilar et al.
Metanephric Adenoma (MA) is a histologically and clinically unique and rare benign renal epithelial tumour.
They used metanephric cultures of C57BL6J mice expressing the [Ahr.
Ipsilateral renal agenesis with partial vaginal septum on the same side and didelphys uterus is explained by embryologic arrest at the 8th week of gestation affecting simultaneously the mullerian and metanephric ducts.
Micropuncture and cannulation studies of fluid composition and transport in the ductuli efferentes testis of the rat: comparisons with the homologous metanephric proximal tubule.
Benign renal tumors are classified into renal cell tumors, metanephric tumors, mesenchymal tumors, and mixed epithelial and mesenchymal tumors.
The ureteral bud arises from the dorsal aspect of the distal mesonephric duct, which extends in a dorsocranial fashion to meet and induce differentiation of the metanephric blastema.
Increased glucose increases glomerular basement membrane in metanephric culture.