Ist branchial arch 2nd branchial arch 2舌的发生 ix glossophaga e.■hbha!orch median 舌体 奇结节( (tuberculum impar) cecum 侧舌膨大 lateral lingual swelling)) esophagus laryngotracheal hypobranchial groove 舌根 联合突( copula) of third arch 鳃下隆起( hypobranchial eminence hypobranchial 界沟( erminal sulcus) glottis 盲孔( foramen cecum) oral p median sulcus of tongue circumvallate pharyngo erminal sulcus rt of tongue foramen cecum2.舌的发生 • 舌体 奇结节(tuberculum impar) 侧舌膨大(lateral lingual swelling) • 舌根 联合突(copula ) 鳃下隆起(hypobranchial eminence) • 界沟(terminal sulcus) • 盲孔(foramen cecum)