amniotic fold

noun

Medical Definition of amniotic fold

: any of the folds that consist of ectoderm and the outer layer of mesoderm, that arise from the extraembryonic blastoderm first at the head, then at the tail, and finally on each side, and that form the amnion and much of the chorion

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“Amniotic fold.” Merriam-Webster.com Medical Dictionary, Merriam-Webster, https://www.merriam-webster.com/medical/amniotic%20fold. Accessed 28 Nov. 2020.

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