单词：mesenteron
developed from the primitive enteron and is lined with hypoblast. It is
distinguished from the stomod/um, a part at the anterior end of the
canal, including the cavity of the mouth, and the proctod/um, a part at
the posterior end, which are formed by invagination and are lined with
epiblast.
mesenteron的用法和样例：
词汇搭配
- anterior mesenteron rudiment前中肠原基
- intermediate mesenteron rudiment间中肠原基
- midgut[解]中肠
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