nephrostome

詳細解釋：

neph.ro.stome

n.（名詞）
The ciliated funnel-shaped inner opening of a nephridium into the coelom in some invertebrates and lower vertebrates.
腎孔，腎口：一些無脊椎動物和低等椎動物體內通向體腔的腎管纖毛，漏斗形，內部開口

來源：
nephro-
nephro-
Greek stoma [mouth]
希臘語 stoma [嘴]