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stomodeum

   Also found in: Medical, Encyclopedia, Wikipedia 0.01 sec.
sto·mo·de·um also sto·mo·dae·um  (stm-dm)
n. pl. sto·mo·de·a also sto·mo·dae·a (-d)
The anterior or oral portion of the alimentary canal of an embryo.

[New Latin : Greek stoma, mouth + Greek hodaios, on the way (from hodos, road).]

stomo·deal (-dl) adj.


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The stomodeum appeared at stage 13 and the prototrochal girdle with its cilia were completely formed during stage 14 (Fig.
2,10,14) These cells are believed to derive from either the stomodeum or the stomach, which is located in the neck close to the forming tongue at this stage of development.
The adenohypophysis, or anterior pituitary, is derived from an evagination of oral ectoderm of the dorsal median region of the stomodeum.
 
 
 
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