The epithelium of the tubuli contorti exhibits a yellow cloudiness, and the outline of the cells is irregular and jagged.
In cases attended with haemorrhage, the tubuli may be here and there filled with blood.
Somewhat similar appearances were noticed in the kidneys, the microscopic examination of which showed the tubuli contorti enlarged and filled with fatty globules.
The convoluted tubuli continuous with them are, I believe, ciliated in their proximal section, but I have not made careful investigations with reference to their finer structure.
Wolffian body, and which gives rise in the male to parts of the tubuli seminiferi.
Up to this time there has been no distinction between the anterior and posterior tubuli of the primitive excretory organ which alike open into the Wolffian duct.
From this canal tubules pass off which are continuous with the tubuli uriniferi, as may be seen from fig.
These tubes receive the tubuli coming from the testicular ampullae.
In later embryonic stages they are frequently elongated, sometimes convoluted, and are very similar to the embryonic tubuli seminiferi.
The anterior tubuli of the primitive excretory organ retain their early relation to the Wolffian duct, and form the Wolffian body.
It consists of a considerable number of rather definite convolutions, and after uniting withtubuli from one or two (according to size of the segment) accessory Malpighian bodies (a.
These ducts, the vasa efferentia, carry the semen to the Wolffian body, but before opening into the tubuli of this they unite into the longitudinal canal of the Wolffian body (l.
The tubuli of the primitive excretory organ undergo further important changes.
The posterior part was formed of the usual uriniferous tubuli and Malpighian bodies.
The parenchymatous tissue of the kidneys is commonly found in an oedematous condition, and the tubuli uriniferi are more or less affected by a catarrhal inflammation, which is manifested by the exfoliation of granular epithelium.
Sometimes crystalline deposits of uric acid, urates, and oxalates take place in the tubuli of the kidney and in the bladder, and lead to the nephritic and vesical irritations which are often the source of much inconvenience and pain.
Virchow, on the other hand, regards the lumen of the tubuli as the seat of the deposit, and in this he is supported by Charcot and Cornil and Ranvier, Lancereaux and Wagner.
Where the absorption of the thinner parts of the secretion takes place too hastily in the kidnies, the hardened mucus, and consequent calculous concretions, sometimes totally stop up the tubuli uriniferi; and no urine is secreted.
When no gravel has been previously observed, and the patient has been a wine-drinker rather than an ale-drinker, the case is generally owing to inirritability of the tubuli uriniferi, and is frequently fatal.
In microscopic structure the right gonad resembled a testis consisting entirely oftubuli lined by an epithelium consisting of a single layer of cells.
Pliny speaks of tubi fictiles used for conduits from fountains,[2488] and Vitruvius recommends the use of terracotta pipes (tubuli fictiles) in aqueducts.
I do not deny that the tubulation is often imperfectly preserved, and that in such cases the casts of the tubuli may appear to be glued together by concretions of mineral matter, or to be broken or imperfect.
These groups of tubuli are in some places very regular, and have in their axes cylinders of compact calcareous matter.
The provision even for nourishing the interior of the skeleton by tubuli and canals is in principle similar to that involved in the Haversian canals, cells, and canalicules of bone.
Supposing then that the spaces between the calcareous laminæ, as well as the canals and tubuli traversing their substance, were once filled with the sarcode body of a Rhizopod, comparisons with modern forms at once suggest themselves.
All the tubuli which he has described belong to that canal system which, as I have shown,[T] is limited in its distribution to the intermediate skeleton, and is expressly designed to supply a channel for its nutrition and augmentation.
Up to this time there has been no distinction between the anterior and posterior tubuli of the mesonephros, which alike open into the Wolffian duct.
It is not certain to what parts of the testicular tubuli they give rise, but they probably form at any rate the vasa recta and rete vasculosum.
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.
Owing to the formation of the accessory tubuli the segments of the mesonephros acquire a compound character.
The mesonephric duct receives the secretion of the anterior tubuli of the primitive mesonephros.
The anterior tubuli of the primitive excretory organ retain their early relation to the Wolffian duct, and form the permanent Wolffian body or mesonephros.
These ducts, the vasa efferentia, carry the semen to the Wolffian body, but before opening into the tubuli of this body they unite into a canal known as the longitudinal canal of the Wolffian body (l.
These outgrowths unite with secreting tubuliand Malpighian bodies, formed in situ.
From the latter are seen passing off the successive tubuli of the anterior segments of the Wolffian body, in connection with which Malpighian bodies are typically present, though not represented in my diagram.
According to the view of Remak and Koelliker the outgrowths from the ureter give rise to the whole of the tubuli uriniferi and the capsules of the Malpighian bodies, the mesoblast around them forming blood-vessels, etc.
The valves are so translucent, that in the thin margins, even the tubuli could be sometimes distinguished.
The surface of the membrane is thickly clothed with spines, which are strong, thick, yellow, pointed, and furnished with large tubulirunning to the underlying corium.
The shelly matter of the scales resembles that of the valves, and the manner of growth is the same; tubuli generally run to and through them from the corium.
I believe that these latter are developed from the tubuli leading to the calcified beads, and, therefore, are formed directly under them.
The tubuli are not numerous, and of small diameter.
The external membrane is very thin, and is penetrated by the usual finetubuli leading to the corium; its surface is wrinkled and destitute of spines, or with extremely few.
A great number of branching and straight looped, tubuli (little tubes) converge on an open space, the pelvis.
Note, while doing this, the yellow, jelly-like sense-tubuli beneath the skin.
These tubuli open on the surface by small pores, and the nerves terminate in hair-like extremities in their lining.
The kidney, we shall see later, is simply an aggregate of branching tubuli (Sheet 7).
These tubuli are the segmental tubes or nephridia.
When a piece of the shell is dissolved in acid, no tubuli can be discovered, which may be accounted for by the thinness of the walls; nor are there any spines on any of the external membranes.
From the number and length of the tubuli of both kinds, the tissue left after the action of acid is singularly complicated.
Microscopical examination does not exhibit any fine spines on the membrane investing the valves, or any tubuli in the shelly layers after their dissolution in acid: in this respect the valves resemble those of Coronula.
This membrane is not furnished with spines, nor is it penetrated by tubuli as in most other genera.
On parts of the shell where there are no bristles, similar tubulipenetrate the shelly layers, and come to the surface.
Collosphaerida# with simple shells, the pores of which are prolonged into external simple radial tubuli with solid wall; outer mouth of each tubulus armed with a single tooth.
Polar tubuli prismatic, about half as long as the main axis, with prominent edges and longitudinal rows of smaller pores between them.
Tubuli conical, their outer opening three-fourths as broad as the inner and three times as broad as their height.
Tubuli cylindrical, very elongated, four times as long as broad; their bases separated by distances which are equal to their breadth.
Inner aperture of the tubuli commonly as broad as the half radius of the shell (or somewhat smaller), about as large as the truncated outer aperture.
Tubuli conical, their outer opening smaller than the inner.
Tubuli of the shell funnel-like, the outer aperture much larger than the inner.
Collosphaerida# with simple shells, the pores of which are prolonged into external simple radial tubuli with fenestrated walls; outer mouth of the tubuli armed with a coronal of spines.
Tubuli cylindrical, twice as long as broad, very thick-walled, and nearly contiguous, so that their diameter is five times as large as their distance apart.
Outer aperture of the tubuliirregularly dentated, a little dilated, and not much broader than the inner aperture, one-half or one-third as broad as the shell radius.
Collosphaerida# with simple shells, the pores of which are prolonged into external simple radial tubuli with fenestrated wall; outer mouth of the tubuli truncated, smooth.
The inner half of the tubuli is narrow, cylindrical; the outer half funnel-like dilated, similar to the flower of Convolvulus.
Tubuli conical, their outer opening half as broad as the inner and three times as broad as their height.
The above list will hopefully give you a few useful examples demonstrating the appropriate usage of "tubuli" in a variety of sentences. We hope that you will now be able to make sentences using this word.
