@asomd2021 @akulkis00 @voxday —“Midway through development, all vertebrate emb

@asomd2021@akulkis00@voxday

—“Midway through development, all vertebrate embryos possess a series of folds in the neck region, or pharynx. The convex parts of the folds are called pharyngeal “arches” or “ridges,” and the concave parts are called pharyngeal “clefts” or “pouches.” But pharyngeal folds are not gills. “—