foregut

fore.gut

n.（名词）
The anterior part of the embryonic alimentary canal of a vertebrate from which the pharynx, lungs, esophagus, stomach, liver, pancreas, and duodenum develop.
前肠：脊椎动物消化道的前部，由此产生出咽、肺、食管、胃、肝脏、胰和十二指肠
The first part of the alimentary canal of an arthropod or annelid, which includes the buccal cavity, esophagus, crop, and gizzard.
前肠：节肢动物或环节动物的消化道的第一部分，包括口腔、食管、嗉囊和砂囊