The ventral lobe continues to develop; and soon projects beyond the dorsal, which gradually atrophies together with the notochord contained in it, and finally disappears, leaving hardly a trace on the dorsal side of the tail (fig.
When the tail completely atrophies the larva leaves its transparent covering, and becomes an asexual Doliolum with a dorsal stolon.
In the lower Vertebrata the body cavity is originally present even in the postanal region of the trunk, but usually atrophies early, frequently before the two halves coalesce.
The Wolffian body atrophies nearly completely in both sexes; though, as described above, part of it opposite the testis persists as the head of the epididymis.
Anteriorly the right vein atrophies and the left continues forward the unpaired posterior section.
This section invariably atrophies at a comparatively early period of embryonic life; but it is much better developed in the lower forms than in the higher.
After becoming separated from the lower part (Marshall), the upper part of the cavity atrophies about the time of the appearance of the external gills.
In both groups the allantois serves as an embryonic urinary bladder, but while it atrophies in Aves, its stalk dilates to form a permanent urinary bladder in Reptilia.
In Amphioxus the postanal gut, though distinctly developed, is not very long, and atrophies at a comparatively early period.
The pronephros atrophies more or less completely in most types, though it probably persists for life in the Teleostei and Ganoids, and in some members of the former group it perhaps forms the sole adult organ of excretion.
In an embryo not very much older than the one last described the pronephros atrophies as such, its two posterior openings vanishing, and its anterior opening remaining as the permanent opening of the Muellerian duct.
The yolk-sack in many cases atrophies completely before the close of intra-uterine life, but in other cases it is only removed with the other embryonic membranes at birth.
In the female the Wolffian ductatrophies more or less completely.
But, oftener, this weakening is due to pathological causes, as in morbid atrophies or poisoning by microbian toxins.
Metchnikoff was able to note similar phenomena in divers other senile atrophies either by his own ulterior researches or by collaboration with his pupils (MM.
Already some time previously, theoretical considerations on senile atrophies had directed his thoughts towards old age.
He found that senile atrophies have the same cause, and asked why the cells of old people's organisms should become enfeebled.
Ulcerations of cartilages, contractions of tendons, atrophies of muscles with subluxations of joints, are more common in rheumatoid arthritis than in gout.
These atrophiescorrespond to the arthritic muscular atrophies of Vulpian, Charcot, Gowers, and others, and cannot for a moment be regarded as caused by suggestion or as removable by counter-suggestion or persuasion.
An invalided soldier had been suffering for a year with marked atrophies and the right knee in extension.
Pithiatic atrophies are slight and probably always to be accounted for by disuse or the association of some peripheral neural disorder with the hysteria.
The chain of events at the menopause, the acme and then ebb of the sex tide, may be summed up something like this: The ovaries cease producing their eggs and so shrivel as a storage battery atrophies when it dries up.
For just as the thymus involutes at the second year, the pineal atrophies before the onset of adolescence.
As in all other cases, itatrophies in the course of the post-larval metamorphosis.
The enormous upper lip persists for some time, but subsequently atrophies and is replaced by a normal labrum.
In the Sturgeon the germinal vesicleatrophies and breaks up before impregnation, and afterwards part is found as a granular mass on the surface of the egg, while part forms a female pronucleus.
Polyzoa may perhaps be a rudiment of the supra-oesophageal ganglion, which entirely atrophies in the adult after the attachment has been effected in the region of this disc.
In Tergipes lacinulatus, observed by Schultze, the velum atrophies before the shell and operculum are thrown off.
In birds both vitelline membrane and zona radiata are present, but the latter atrophies early, leaving the former as the sole membrane when the egg is ripe.
In Torpedo embryos the head-cavity is much smaller, and atrophies earlier than in the embryos of Pristiurus and Scyllium.
It is more developed in Scyllium than in Raja, but atrophies early in both genera.
Giving creates dependence because it atrophies industrial and moral initiative, just as a crutch or a splint causes muscles to waste.
In the economic field we try to avoid making a person depend on a crutch, a support, a pension, which atrophies his economic powers instead of developing them.
The above list will hopefully give you a few useful examples demonstrating the appropriate usage of "atrophies" in a variety of sentences. We hope that you will now be able to make sentences using this word.
