| 释义 |
Head kidney
| (Anat.) | the most anterior of the three pairs of embryonic renal organs developed in most vertebrates; the pronephros. |
See also: Head EncyclopediaSeePronephroshead kidney
pro·neph·ros, pl. pro·neph·roi (prō-nef'ros, -roy), 1. The definitive excretory organ of primitive fishes. Synonym(s): head kidney2. In the embryos of higher vertebrates, a vestigial structure consisting of a series of tortuous tubules emptying into the cloaca by way of the primary nephric duct; in the human embryo, the pronephros is a very rudimentary and temporary structure, followed by the mesonephros and still later by the metanephros. Synonym(s): forekidney, primordial kidney [pro- + G. nephros, kidney] ThesaurusSeekidney |