Dictionary > Stomodeum

Stomodeum

stomodeum
1. A midline ectodermal depression ventral to the embryonic brain and surrounded by the mandibular arch; when the buccopharyngeal membrane disappears it becomes continuous with the foregut and forms the mouth.
Synonym: stomatodeum.
2. The anterior portion of the insect alimentary canal, consisting of mouth, buccal cavity, pharynx, oesophagus, crop (frequently a diverticulum), and the proventriculus.
Origin: Mod. L. Fr. G. Stoma, mouth, – hodaios, on the way, fr. Hodos, a way


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