鳃心;
On the afferent gill arterial trunk are the round protruding structures which may serve as a branchial heart of the blood blebs and may concern with the material exchange of the gill.
入鳃动脉主干上具有膨大的圆形隆起,可能起类似血泡的鳃心作用,尚与鳃部本身的物质交换有关;
简答网 · 高考英语