stomatodeum


Also found in: Dictionary.

sto·mo·de·um

(stō'mō-dē'ŭm),
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(s): stomatodeum
2. The anterior portion of the insect alimentary canal, consisting of mouth, buccal cavity, pharynx, esophagus, crop (frequently a diverticulum), and the proventriculus.
[Mod. L. fr. G. stoma, mouth, + hodaios, on the way, fr. hodos, a way]

sto·mo·de·um

, stomatodeum (stō'mō-dē'ŭm, -mă-tō-dēŭm)
1. A midline ectodermal depression ventral to the embryonic brain and surrounded by the mandibular arch; when the buccopharyngeal membrane disappears, the stomodeum becomes continuous with the foregut and forms the mouth.
2. The anterior portion of the insect alimentary canal.
[Mod. L. fr. G. stoma, mouth, + hodaios, on the way, fr. hodos, a way]

sto·mo·de·um

, stomatodeum (stō'mō-dē'ŭm, -mă-tō-dēŭm)
A midline ectodermal depression ventral to the embryonic brain and surrounded by the mandibular arch; when the buccopharyngeal membrane disappears, the stomodeum becomes continuous with the foregut and forms the mouth.
[Mod. L. fr. G. stoma, mouth, + hodaios, on the way, fr. hodos, a way]

stomatodeum

see stomodeum.

stomodeum, stomodaeum, stomatodaeum, stomatodeum

the ectodermal depression at the head end of the embryo, which becomes the front part of the mouth.