Cervical sinus

Template:Infobox Embryology Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]

The mandibular and hyoid arches grow more rapidly than those behind them, with the result that the latter become, to a certain extent, telescoped within the former, and a deep depression, the cervical sinus, is formed on either side of the neck.

This sinus is bounded in front by the hyoid arch, and behind by the thoracic wall; it is ultimately obliterated by the fusion of its walls.

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  The head and neck of a human embryo thirty-two days old, seen from the ventral surface.

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