Anatomy and Embryology. Originally: the rectum or bladder or either of the openings through which these discharge their contents (now rare). In later…
| 单词 | θ18841 |
| 释义 | the world > life > biology > biological processes > procreation or reproduction > embryo or fetus > embryo parts > [noun] > digestive tract (5) cloaca1726 Anatomy and Embryology. Originally: the rectum or bladder or either of the openings through which these discharge their contents (now rare). In later… proctodeum1876 The posterior portion of the alimentary canal, esp. in an embryo (in which it occurs as an invagination of the epiblast or ectoderm); spec. the… stomodaeum1876 The anterior portion of the digestive tract, beginning as an invagination of the epiblast. mesenteron1877 The middle part of the digestive tract (midgut), esp. that of an insect or vertebrate embryo. stomatodaeum1887 = stomodaeum, n. |
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