difference betweern pro nephron meso nephron and metanephron
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The correct terms are pronephros, mesonephros and metanephros.
Pronephros is one of the earliest stage in development of kidneys in vertebrates. It disappears by the 4th week of embryonic development in humans.
Mesonephros is the middle kidney or second stage in the development of kidney. It develops from mesoderm and acts as an excretory organ for 4-8 weeks in an embryo. It degenerates later.
Metanephros is permanent and remains functional in higher vertebrates. It is the final stage in the development of kidneys.
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