stomodaeum

[ stoh-muh-dee-uhm, stom-uh- ]

Phonetic (Standard)IPA

noun

, plural sto·mo·dae·a [stoh-m, uh, -, dee, -, uh, stom-, uh, -].

stomodaeum

/ ˌstəʊməˈdiːəm; ˌstɒm- /

the oral cavity of a vertebrate embryo, which is formed from an invagination of the ectoderm and develops into the part of the alimentary canal between the mouth and stomach

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C19: from New Latin, from Greek stoma mouth + hodaios on the way, from hodos way

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There is only one ciliated groove, the sulcus, in the stomodaeum.

Each zooid has six tentacles; the stomodaeum is elongate, but the sulcus and sulculus are very feebly represented.

The stomodaeum lies in the sagittal plane, the funnel and tentacles in the transverse or tentacular plane.

The mouth and stomodaeum form independently of the blastopore.

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