foregut例句

These epithelial elements arise embryologically from foregut endoderm in the process of bronchial tubular growth.
这些表皮细胞在胚胎学上把源于支气管生长过程中的前内脏叫内胚层.

The mucous cells lie in the anterior part of the foregut and cloaca.
粘液细胞分布于前肠的前段和排泄腔.