metanephrogenic blastema


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met·a·neph·ro·gen·ic blas·te·ma

(met'ă-nef'rō-jen'ik blas-tē'mă)
The mesenchyme covering the distal end of the metanephric diverticulum; it gives rise to the nephrons of the permanent kidneys.
Synonym(s): metanephric mass of mesenchyme.
References in periodicals archive ?
The inadequate stimulation of metanephrogenic blastema by the ureteric bud results in renal maldevelopment.
The bud grows laterally and invades the centre of the metanephrogenic blastema, the primordial renal tissue.
(2) There are several theories to explain the occurrence of supernumerary kidney: a) bifurcation of ureteric bud with independent penetration into metanephrogenic blastema that develop and divide in two kidneys; b) two independent ureteral buds that penetrate the metanephrogenic blastema that divides into two and c) fragmentation of metanephrogenic blastema due to linear infarcts.
This structure then divides to two or three before reaching the metanephrogenic blastema.[3-5] In such cases, it may be difficult to decide whether the left kidney represents a trifid pelvis, purely a peduncular arrangement or elongation of the major calyces in association with a rudimentary pelvis.