Medical term:

stomodeum

[sto″mo-de´um]

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

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]

Farlex Partner Medical Dictionary © Farlex 2012

stomodeum

also

stomodaeum

(stō′mə-dē′əm)

n. pl. stomo·dea also stomo·daea (-dē′ə)

The anterior or oral portion of the digestive tract of an embryo.

sto′mo·de′al (-dē′əl) adj.

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]

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