A region, of SOMITE development period, that contains a number of paired arches, each with a mesodermal core lined by ectoderm and endoderm on the two sides. In lower aquatic vertebrates, branchial arches develop into GILLS. In higher vertebrates, the arches forms outpouchings and develop into structures of the head and neck. Separating the arches are the branchial clefts or grooves.
    

concept

SEM of wounded mouse foetus

SEM of mouse foetus

Branchial carcinoma / by Charles A. Powers.

On the modifications of the first and second visceral arches : with especial reference to the homologies of the auditory ossicles / by Hans Gadow.

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Branchial Region

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SEM of mouse foetus

SEM of mouse foetus

SEM of wounded mouse foetus

Branchial carcinoma / by Charles A. Powers.

On the modifications of the first and second visceral arches : with especial reference to the homologies of the auditory ossicles / by Hans Gadow.