head fold

head fold definition - medical

head fold

noun
A ventral folding of the cephalic extremity in the embryonic disk, so that the brain lies in a rostral direction to the mouth and pericardium.

The American Heritage® Medical Dictionary Copyright © 2009 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

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