See Also: cervical sinus(medicine)
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cervical sinus (medicine)


cervical sinus


In young mammalian embryos a depression in the nuchal region caudal to the hyoid arch, with the third and fourth branchial arches and ectodermal grooves in its floor; normally it is obliterated after the second month, but occasionally cervical fistulae persist as vestiges of it.

Synonym: precervical sinus.