| 释义 |
Nephrotome
nephrotome[′nef·rə‚tōm] (embryology) The narrow mass of embryonic mesoderm connecting somites and lateral mesoderm, from which the pronephros, mesonephros, metanephros, and their ducts develop. Nephrotome the primordium of the excretory organs in embryos of chordate animals and man. Each nephrotome is a paired metameric formation located between the somite—the segmented dorsal portion of the mesoderm—and the nonsegmented ventral portion of the mesoderm. The kidneys and their ducts and the vas deferens all develop from the nephrotome. nephrotome
nephrotome [nef´ro-tōm] one of the segmented divisions of the embryonic mesoderm connecting the somite with the lateral plates of unsegmented mesoderm; the source of much of the urogenital system.neph·ro·tome (nef'rō-tōm), The segmented intermediate mesoderm develops into nephric primordia. [nephro- + G. tomē, a cutting] nephrotome the part of the SOMITE that develops into an excretory organ. |