prechordal plate

pre·chor·dal plate

a small area immediately rostral to the cephalic tip of the notochord where ectoderm and endoderm are in contact; when turned under the growing head, it forms the buccopharyngeal membrane.
See also: oral plate.
Synonym(s): prochordal plate
References in periodicals archive ?
INTRODUCTION: Notochord is a midline structure extending from primitive streak to prechordal plate and serves as an axial skeleton for the developing embryo (1).
During third week of development, pre-notochordal cells invaginating inside the primitive pit move forward and cephalad upto prechordal plate.