The color of the Chichagof egg differs from that of the Big Basin egg, but does agree with the one taken from an oviduct by Cantwell (Gabrielson and Lincoln 1959).
Nests of neither species have been located in the Aleutians, but nesting of both is suspected at Adak, Unalaska, and Unimak, where specimens of Kittlitz's with brood patches or eggs in the oviduct have been collected in nearshore waters.
It is their destiny to remain in the oviduct and develop.
Unlike the oviduct of the bird, which opens into the intestine, these ducts unite just before the end, and have separate openings of their own.
There is no separate opening for the oviductinto the outer world.
As the bird approaches maturity, one ovary and its oviduct enlarge, and the ova, which develop from the inside of the ovary just as the ovule develops inside the flower ovary, also become large.
The ovaries of the bird are in the small of the back close to the backbone, and there is a tube called the oviduct or egg-duct, leading from the ovary down to the lower end of the intestine, which it enters.
The oviduct can be distinctly traced to its outlet in the reproductive papilla, which, as usual in true Distomes, is placed in the middle line, immediately above the ventral sucker.
Their slight contractile movements, however, serve the purpose of concealing them in the grass, and probably aid in the further expulsion of eggs, which pass from the oviduct in single file.
The egg-capsule which is formed for them in their passage down the oviduct is perforated in Sepia by a micropylar aperture.
The oviduct is formed by a coalescence of the ducts from each germogen.
In Trematodes the ovary forms an unpaired organ directly continuous with an oviduct into which there open the ducts from paired yolk-glands.
When the egg is taken up by the oviduct all trace of both membranes has vanished.
Eventually the ova pass into the oviduct and become free and at the same time assume a spherical form.
A vitelline membrane is formed, and eventually the ovum is taken into the oviduct (segmental organ).
In the passage of the egg through the oviduct the vacuolated follicle cells grow out into very peculiar long processes or villi.
Such types, properly belonging to the second group, originate by a special membranous sack continuous with the oviduct being formed round the primitively free patch of germinal cells.
In the oviduct the ovum receives somewhat remarkable investing structures, derived from the organ before spoken of as the yolk-gland.
Stevens the so-called oviduct acts only as a "sperm-duct" or receptaculum seminis.
We have here clearly a case of a true coelomoduct performing the function of an oviduct in both leeches and Eudrilidae.
Mammæ are only the vascular bundles of the oviduct placed in the direction outwards, or albumen-glands of the integument.
The oviduct and seminal duct or penis follow the same mode of formation.
In the oviparous animals the secretion of the vitellus is distinct from that of the albumen; the one takes place in the ovarium, the other in the oviduct or uterus.
This penis situated at the orifice of the oviduct is the clitoris.
The orifice of the oviduct of an insect or other invertebrate.
The terminal part of theoviduct in insects and various other invertebrates.
She laid fertile eggs for thirteen years; that is, the spermatozoa in her oviduct retained their vitality for thirteen years.
The "white" and the calcareous shell of a hen's egg are adventitious parts, added in the oviduct after the egg leaves the ovary.
Warm wheat bran mashes, ground bone, beef scraps, all tend to allay the irritations of the oviduct and stimulate the secretions of albumen.
Double-yolked eggs are larger than normal and may injure the oviductwhen expelled.
This condition is produced by two ovary capsules bursting at about the same time and gaining entrance together into the oviduct where they are concealed in the same shell.
Defn: The part of theoviduct of certain trematode worms in which the ova are completed and furnished with a shell.
Defn: The orifice of the oviduct of an insect or other invertebrate.
Defn: The terminal part of theoviduct in insects and various other invertebrates.
Section through the ureters, the Wolffian duct and the oviduct of a female embryo of Scy.
The oviducts cross before opening to the exterior, the right oviduct passing under the rectum and the left over it.
Sections b and c are given more especially to shew the mode of formation of the oviduct (ov).
The section represented shews that in some instances the formation of the oviduct and Wolffian duct is accompanied by a division of the lumen of the segmental duct into two not very unequal parts.
On the left side the oviduct has been accidentally made too small.
The sections shew that the oviduct arises as a thickening on the under surface of the segmental duct into which at the utmost a very narrow prolongation of the lumen of the segmental duct is carried.
Section close to the junction of the Wolffian duct and oviduct in a female embryo of Scyllium canicula belonging to stage N.
I feel sure that it does not bristle in this fashion when it descends the delicate natal sheath; it is near the end of the oviduct that it receives its coat of scales.
It is covered on its ventral aspect by the oviduct and by its own duct, but is separated from both of these by a layer of the tough peritoneal membrane, through which the collecting tubes pass.
On the assumption that it is correct we should have to accept the second of the two alternatives above suggested as to the development of the posterior parts of the oviduct in Lepidosteus.
To illustrate the formation of the oviduct I have represented a series of sections through a junction in an embryo in which the splitting into two ducts had only just commenced (Pl.
These relations seem to prove beyond a doubt that the oviduct of Lepidosteus is for its major part homologous with the genital ducts of other Ganoids.
We have, as already stated, been unable to find in our dissections any trace of a duct homologous with the oviduct of the female, and our sections through the kidney and its ducts equally fail to bring to light such a duct.
Each oviduct opens at its anterior extremity into the body-cavity, and behind the two oviducts have independent communications with the general cloaca.
In our examples the oviduct was provided with a simple opening into the kidney duct, on a slight papilla; the peculiar dilatations and processes of the terminal parts of the oviduct, which have been described by Hyrtl, not being present.
In the great majority of Teleosts and in Lepidosteus the oviduct possesses no coelomic funnel, its walls being in structural continuity with the wall of the ovary.
On this interpretation the condition characteristic of Teleosts would be due to the lips of the oviduct becoming fused with the ovarian wall, and the duct itself would be a Muellerian duct as elsewhere.
In the Selachians and Dipnoans the oviduct is of the type (Muellerian duct) present in the higher vertebrates and apparently representing a split-off portion of the archinephric duct.
And the structure of the egg carries us back to the oviduct of the parent-fowl.
This thread is composed of a gummy secretion, evolved in a gland attached to the oviduct of the female Lace-fly.
The part of the oviduct of certain trematode worms in which the ova are completed and furnished with a shell.
Thorough examination of microscopic sections of oviduct (taken at various times in the season of activity) usually revealed a few sperm lodged in the folds (Pl.
Extrauterine migration of ova, whereby eggs from one ovary pass into the oviduct of the opposite side, is of common occurrence in T.
Each ovary was always kept associated with the oviduct of the same side, but in some instances it was not recorded whether the organs were left or right.
If this theory is sound, it would follow that corpora lutea are not formed in cases where the ova are not retained in the oviduct during their development.
In the viviparous forms mentioned there is yolk in the ovum which is retained in oviduct or ovary, but additional nutriment is also absorbed from the uterine or ovarian walls.
In these cases there is no placenta and generally no adhesion of ovum or embryo to walls of oviduct or ovary.
There was a fully developed oviduct on the left side, on the right another less than half the full length.
The oviduct removed on the animal's left, and the ovary on its right.
The distal end of the oviduct of the female is in the breeding season (early March) enormously distended with ova, and the ovaries become then the mere vestiges of their former selves.
The distal end of the oviduct is, therefore, not unfrequently styled the uterus.
The oviduct is dead white then, and larger and much more in evidence than the (pinkish) intestine even.
The Female, the oviduct of the left side cut away, -and an egg case in the oviduct.
Sperm-reservoir attached to the oviduct in Pontia.
Under this head also may be noticed the fluid, secreted in peculiar vesicles, that lubricates the oviduct and the passages of the sexual organs[654].
In some fishes there is no special oviduct and the eggs pass into the abdominal cavity before exclusion.
Where an oviductis present the eggs are often poured out in glutinous masses, as in the bass.
When mature they are discharged through the oviduct to the urogenital sinus.
The journey is fraught with momentous consequences, for it is during this passage through theoviduct that the fate of the ovum is determined.
As the ovum escapes from the oviduct and enters the womb, it is smaller, in all probability, than the head of a pin.
While these changes are taking place the growing ovum is carried down the oviduct a distance of four to six inches and finally comes to rest in the uterus, where it is to dwell during the months necessary to its complete development.
The clear, glarous mass of albumin that surrounds the yellow yelk of the bird's egg, and also the hard chalky shell, are only formed within the oviduct round the impregnated ovum.
The mature ova of the mammal, when they have left the ovary, are fertilised either here or in the oviduct immediately afterwards by the invading sperm-cells.
Either here in the oviduct or after the mammal gastrula has passed into the uterus it is converted into the globular vesicle which is shown externally in Figure 1.
The above list will hopefully give you a few useful examples demonstrating the appropriate usage of "oviduct" in a variety of sentences. We hope that you will now be able to make sentences using this word. Other words: canal; duct; intestine; pore; vagina; vessel
