1) The formation of a neurula 
Neurulation refers to the folding process in vertebrate embryos, which includes the transformation of the neural plate into the neural tube. The embryo at this stage is termed the neurula. The process begins when the notochord induces the formation of the central nervous system (CNS) by signaling the ectoderm germ layer above it to form the thick ...
(noor″u-la´shәn) formation in the early embryo of the neural plate and neural folds, followed by its closure with development of the neural tube.
Type: Term Pronunciation: nū′rū-lā′shŭn Definitions: 1. Formation of the neural plate and closure of the neural folds and neuropores to form the neural tube.
the formation of a neurula.