head process
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head pro·cess
the primordium of the notochord.
See also: notochordal process.
See also: notochordal process.
Farlex Partner Medical Dictionary © Farlex 2012
head process
An axial strand of cells in vertebrate embryos extending forward from the primitive knot. It forms a primitive axis about which the embryo differentiates.
See also: process
Medical Dictionary, © 2009 Farlex and Partners