visceral arch


Also found in: Dictionary, Thesaurus, Medical.

visceral arch

[′vis·ə·rəl ′ärch]
(anatomy)
One of the series of mesodermal ridges covered by epithelium bounding the lateral wall of the oral and pharyngeal regions of vertebrates; embryonic in higher forms, they contribute to formation of the face and neck.
(vertebrate zoology)
One of the first two arches of the series in gill-bearing forms.