脊椎动物颈部两侧横走地皱襞。原为呼吸器官，盲鳗有15对，七鳃鳗有8对，软骨鱼类一般有7对，少数有9对，硬骨鱼、两栖类和爬行类各为6对，鸟类和哺乳类各5对，在发生地一定时期出现，或终生存在。
鳃弓 咽囊 鳃器 鳃沟（branchial 鳃膜apparatus） 鳃弓（branchial arch）：人胚第4周，头部两侧的间充质增生 形成的弓形结构，左右对称、背腹走向、首尾方向排 列，共6对。
基于312个网页-相关网页
... visceral muscles 脏腑肌 visceral arch 脏弓 ; 鳃弓 ; 脏弧 visceral organs 内脏；脏器（visceral organ的复数形式） ...
基于70个网页-相关网页
... branchial formula [动]鳃式 branchial gill arc 鳃弓 branchial gland 鳃腺 ...
基于6个网页-相关网页
The basibranchial bone of the second and the fourth gill arch form petioliform . The branches of the petioliform take shape arborescent and have ubisch process in the end.
胡子鲇的鳃上器是由第二、第四对鳃弓基部的鳃骨向外突起形成柄部，柄部反复分支呈树枝状，其末端有球状突起。
参考来源 - 胡子鲇鳃上器的显微和亚显微结构的研究·2,447,543篇论文数据，部分数据来源于NoteExpress
结果：好发部位在第二鳃弓，第一鳃弓也可发病；
Results:The branchial cleft cysts more frequently arose from the second branchial pouches and also from the first pouches.
结果表明：鳃耙、鳃弓、鳃丝上皮细胞表面都有环形隆嵴、断续的短纹；
The results demonstrated that the external morphological structure of gill rakes, the gill arches and the gill filaments showed the presence of various features such as annular ridge and short lines.
舒宾写道：“结论不可避免：构成爬行类颚部一部分的鳃弓，同样也构成了哺乳类的耳骨。”
Shubin writes: "the conclusion was inescapable: the same gill arch that formed part of the jaw of a reptile formed ear bones in mammals."
应用推荐