How to use Funnels in a sentence
The portion of Carniola belonging to the Karst region presents a great number of caves, subterranean streams, funnels and similar phenomena.
In Lumbricus the connexion is a little closer; the funnel of the nephridium, in the segments in which the funnels of the gonad ducts are to be developed, persists and is continuous with the gonad duct funnels on their first appearance.
At the least there is no doubt that the genital funnels are developed precisely where the nephridial funnels formerly existed.
If the genital funnels are not wholly or partly formed out of the nephridial funnels they have replaced them.
Here also the genital funnels have either replaced or been formed out of nephridial funnels.Advertisement
But the funnel is large and thus differs from the funnels of the nephridia in adjoining segments.
The anterior nephridia, of which there are one to three pairs, contrast with the posterior series by their small funnels and large size, the posterior nephridia having a large funnel followed by a short tube.
It seems that the posterior nephridia are mainly gonad ducts, and the gonads are developed in close association with the funnels.
In Thamnodrilus, as has been pointed out, there are two series of nephridia which resemble those of the Terebelloidea in the different sizes of their funnels.
The Oligochaeta contrast with the Polychaeta in the general presence of outgrowths of the septa in the genital segments, which are either close to, or actually involve, the gonads, and into which may also open the funnels of the gonad ducts.Advertisement
These cavities communicate with the exterior through the gonad ducts, which have nothing to do with them, but whose coelomic funnels are taken up by them in the course of their growth.
Nephridia always paired, rarely (Pontobdella) forming a network communicating from segment to segment; lumen of nephridia always intracellular, funnels pervious or impervious.
In Pontobdella and Branchellion the nephridia form a network extending from segment to segment, but there is only one pair of funnels in each segment.
It is remarkable, in view of the spaciousness of the coelom, that the funnels of the latter have not been seen.
In the male there are a right and a left protrusible penis in every genital segment, into which opens the nephridium and a sperm-sac. The wide funnels of the nephridia of this region are possibly of coelomic origin.Advertisement
These are the atrial coelomic funnels or brown funnels, so called on account of the characteristic pigmentation of their walls.
There are reasons for supposing that these funnels are vestiges of an ancient excretory system, which has given way by substitution to the excretory tubules described above.
Into this same cloacal chamber open ventrally a pair of ciliated tubes communicating by funnels with the coelom (Nansen and Wheeler); these are possibly nephridia, and excretory in function.
Each nephridium is provided with either one or two funnels which open into the postseptal division of the coelom (ne.f).
When Hewett trawlers sailed from Fleetwood, they still carried the pennant on their funnels.Advertisement
She had a refit in 1897 when the funnels were heightened, the yards were removed and she was given a wheelhouse.
In its earlier conception, this view embraced as homologous organs (so far as the present group is concerned) not only the nephridia of Oligochaeta and Hirudinea, which are obviously closely similar, but the wide tubes with an intercellular lumen and large funnels of certain Polychaeta, and (though with less assurance) the gonad ducts in Oligochaeta and Hirudinea.
In this category are included (by Goodrich and Lankester) the gonad ducts of the Oligochaeta, certain funnels without any aperture to the exterior that have been detected in Nereis, &c., funnels with wide and short ducts attached to nephridia in other Polychaeta, gonad ducts in the Capitellidae, the gonad ducts of the leeches.
This is a large, saucer-shaped disk that catches rainwater and funnels it into the rain barrel.
You have probably seen the webs of these spiders in the early morning, a multitude of delicate funnels in the grass, speckled with dew.Advertisement
In addition to the headset, fan, console and balls, the game includes walls, hoops, funnels and other pieces to customize the game experience.
Replacements parts offered on ChampionJuicer.com include replacement base skids or feet, funnels and cutters, power cords, screens, tampers and the like.
To this pericardial coelom is frequently added a gonocoel enclosing the gonads and the funnels of their ducts.
In the genital segments of Eudrilus the nephridia are present, but the funnels have not been found though they are obvious in other segments.
They pass out through short vasa deferentia with internal ciliated funnels, sometimes an enlargement on their course - the seminal vesicles - and a minute external pore situated on the side of the tail.Advertisement