Sentence Examples with the word seminal

In some cases while the original aperture remains undivided, the seminal groove is closed and so converted into a canal.

In all the tailless batrachians (with the exception of a single known viviparous toad),the male clings to the female round the breast, at the arm-pits, or round the waist, and awaits, often for hours or days, the deposition of the ova, which are immediately fecundated by several seminal emissions.

Since I have undertaken to manhandle this Leviathan, it behooves me to approve myself omnisciently exhaustive in the enterprise; not overlooking the minutest seminal germs of his blood, and spinning him out to the uttermost coil of his bowels.

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But when the male secretion of the ovo-testis is active, the seminal fluid passes from the genital pore along the spermatic groove (fig.

These ducts therefore have not their exact counterparts in the Oligochaeta, unless we are to assume that they collectively are represented by the seminal vesicles of earthworms and the vasa deferentia.

The body of the work, however, is fruitful in seminal ideas, though some statements may be rash and some conclusions extravagant.

F2, f 3, Lateral and caudal sb, Seminal pouch.

Each testis communicates by means of an efferent duct with a common collecting duct of its side of the body, which opens on to the exterior by means of a protrusible penis, and to which is sometimes appended a seminal vesicle.

In 1703 Samuel Morland, in a paper read before the Royal Society, stated that the farina (pollen) is a congeries of seminal plants, one of which must be conveyed into every ovum or seed before it can become prolific. In this remarkable statement he seems to anticipate in part the discoveries afterwards made as to pollen tubes, and more particularly the peculiar views promulgated by Schleiden.

In some of the discoglossid frogs, however, the seminal duct is quite independent of the kidney, which has its own canal, or true ureter.