neural fold


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Related to neural fold: neural groove

neural fold

[′nu̇r·əl ′fōld]
(embryology)
Either of a pair of dorsal longitudinal folds of the neural plate which unite along the midline, forming the neural tube.
References in periodicals archive ?
Copp, "EphrinA-EphA receptor interactions in mouse spinal neurulation: implications for neural fold fusion," The International Journal of Developmental Biology, vol.
Although the cells generally emerge after neural tube closure, emigration in some species is initiated from still-open neural folds prior to completion of neurulation, as is the case in anuran lissamphibians and mammals (for review, see Baker and Bronner-Fraser, 1997).
According to the "spherical" theory, the two originally separate embryonic discs fuse always homologously either dorsally at the closing neural folds or ventrally at structures surrounding a common yolk sac.
At approximately day 17 of gestation, the neural plate invaginates and the lateral portions thicken, forming the neural folds. Meningomyeloceles represent the the most important clinical examples of disordered neurulation because most affected infants survive.
As the embryo develops, the ectoderm-derived neural plate indents to produce a neural groove, which is essentially an open depression bordered by neural folds [ILLUSTRATION FOR FIGURE 1 OMITTED].