Dictionary   FastHealth  Email This!

 


primitive streak

n :  an elongated band of cells that forms along the axis of an embryo early in gastrulation by the movement of lateral cells toward the axis and that develops a groove along its midline through which cells move to the interior of the embryo to form the mesoderm .
 
 

 
Published under license with Merriam-Webster, Incorporated.  © 1997-2004.







               



               



Buchanan General Hospital (Grundy, Virginia - Buchanan County)