The spermatozoa are formed in the walls of the convoluted seminiferous tubules.
In the walls of the seminiferous tubules the spermatozoa are formed.
It is important to draw attention to some structural features exhibited by certain cone-scales, in which there is no external sign indicative of the presence of a carpellary and a seminiferous scale.
These projections and ridges may be homologous with the seminiferous scale of the pines, firs, cedars, &c.
The conclusion drawn from this was that the seminiferous scale (fig.
It is held by some botanists (Celakovsky) that the seminiferous scale of the Abietineae is homologous with the arillus or second integument of the Taxaceae, but this view is too strained to gain general acceptance.
In Larix the carpellary scale may become leafy, and the seminiferous scale may disappear.
I have almost always found the above condition in the dog, only in old animals these seminiferous canals seem gradually to atrophy.
In the male it appears to me to assist in forming, together with cells derived from the germinal epithelium, the seminiferous tubules, the development of which is already fairly advanced by this stage.
Malpighian bodies along the base of the testis: they unite to form an interrupted cord in the substance of the testis, from which the testicular tubuli (with the exception of the seminiferous cells) are subsequently differentiated.
The seminiferous tubules of immature males are small, lack lumina, and contain a few large but inactive spermatogonia (Pl.
Recession of testes in spring was coincident with the period of active breeding; increase in size, later in the season, corresponded to increasing spermatogenic activity and enlargement of seminiferous tubules.
Sternotherus, Terrapene, and Thamnophis are alike in completing spermatogenesis late in the season and storing spermatozoa, in the seminiferous tubules or in the epididymides, during hibernation.
A few spermatozoa and spermatids remain in the seminiferous tubules during hibernation.
Spermatids appear in late June and a few of them undergo metamorphosis in early July; by mid-July, spermatids and secondary spermatocytes are the dominant cells in the seminiferous tubules, although spermatogonia are still active.
Sperm expelled from the epididymides in autumn matings are seemingly replaced by others from the seminiferous tubules; the epididymides become much smaller when their supply of sperm is nearly exhausted after spring mating.
May when a few spermatogonia appear in the seminiferous tubules.
During the season of activity the seminiferous tubules increase to approximately double their minimum diameter, reaching the maximum in August.
In racers recently emerged from hibernation he found the seminiferous tubules filled with Sertoli syncytium, but containing few germ cells.
During the first half of July primary spermatocytes are the dominant cells in the seminiferous tubules.
The above list will hopefully give you a few useful examples demonstrating the appropriate usage of "seminiferous" in a variety of sentences. We hope that you will now be able to make sentences using this word.
