area opaca
[ oh-pey-kuh ]
nounEmbryology.
the opaque area of the blastoderm surrounding the area pellucida.
Origin of area opaca
1From New Latin
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2024
How to use area opaca in a sentence
Junction between the white-yolk spheres and the hypoblast cells at the passage from the area pellucida to the area opaca.
The Works of Francis Maitland Balfour, Volume IV (of 4) | Francis Maitland BalfourTowards the end of the first day blood-vessels begin to be developed in the inner part of the mesoblast of the area opaca.
The Works of Francis Maitland Balfour, Volume III (of 4) | Francis Maitland BalfourThe area vasculosa also grows round the yolk, and completely encloses it not long after the area opaca.
The Works of Francis Maitland Balfour, Volume III (of 4) | Francis Maitland BalfourThe narrow darker ring of blastoderm, outside the area pellucida, is the commencing area opaca.
The Works of Francis Maitland Balfour, Volume III (of 4) | Francis Maitland Balfour
Browse