n. the front part of the embryonic gut, which gives rise to the oesophagus (gullet), stomach, and part of the small intestine (from which the liver and pancreas develop).
n. the site of the embryonic mouth, marked by a depression lined with ectoderm from which the teeth develop. The membrane separating it from the foregut breaks down by the end of the first month of pregnancy. Compare proctodeum.... stomodeum
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