vitellus

Example Sentences

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Thus, in Fishes, the first changes consist in the segmentation of the vitellus and the formation of a germ, processes which are common to all classes of animals.

From Facts and Arguments for Darwin by Muller, Fritz

This vitellus or yolk undergoes a series of segmentation or dividings which are known as spontaneous segmentation.

From What a Young Husband Ought to Know by Stall, Sylvanus

As a consequence of this superficial concentration we get segmentation of the vitellus, with the production of a morula.

From The Mechanism of Life by Leduc, Stéphane

The vitellus and the membrane of the egg enlarge with the embryo and absorb by endosmosis the nutritive matter necessary for the latter, contained in the maternal blood.

From The Sexual Question A Scientific, psychological, hygienic and sociological study by Forel, Auguste

Up to this point the vitellus of the egg, nourished by endosmosis through its membranes, had sufficed for the nutrition of the still very small embryo.

From The Sexual Question A Scientific, psychological, hygienic and sociological study by Forel, Auguste