The resin ductsin some softwoods present a similar appearance, but are far less numerous.
The spermatozoa soon make their way up the oviducts, in which the ripe ova have previously descended, or which gradually descend shortly after, these ducts becoming dilated in consequence.
After hibernation the testes of the males are rather voluminous, and the sperm-ducts are often full of spermatozoa.
The ducts and reservoirs have a chitinous lining, and the ducts exhibit a transverse marking like that of a tracheal tube.
All other parts of the reproductive ducts are developed out of tegumentary thickenings of the ventral surface in the last abdominal segment, and the last but one.
They arise, not as involutions, but as solid masses of mesoblastic tissue, or as channels constricted off from the peritoneal cavity, and their ducts have only a secondary connection with the outside of the body or with the alimentary canal.
The efferentducts form a trunk, which receives a branch from a small accessory lobe, and then unites with its fellow.
The salivary ducts open by a common orifice on its hinder surface.
In order to preserve the liver, it is necessary first to inject the vena porta and excretory ducts with white varnish, to which has been joined one-fifth of turpentine varnish, and some coloring matter, such as red lead.
These are the veins of the leaf and their finer branches and by their direct connection through the stem to the roots, serve as the ducts through which some of the raw materials are brought into the factory.
In ferns there is always some internal equipment for carrying food from one part of the plant, the roots, to another, and this ability is possessed by virtue of ducts or vessels through the stem and leaves.
Losses of this kind may be prevented by covering the ducts with the necessary non-conducting material.
These ductsare made in size and arrangement to suit the amount of air required for each room.
Details of air ducts and damper regulator used with the hot-air furnace.
In brick buildings the ducts are constructed, so far as it is practicable, in the walls.
The fresh air ducts should be provided with dampers to control the effect of extreme cold and wind.
This is another draw-through type of plant where a fan, enclosed in D, draws the air through the conditioning apparatus and forces it through the sheet-iron ducts E.
The exhaust method of ventilation is that in which air is blown out of the building by a fan; and the supply, to replenish that taken away, is conducted into the building through ducts prepared for the purpose.
The conduits may be made of sheet iron, placed to suit the existing conditions; but when a building is constructed with a ventilating plant in view as a part of the building equipment, it is customary to make the ducts part of the partitions.
The eye is provided with a nictitating membrane or third eyelid, at the base of which open the ducts of the Harderian gland.
The upper ones are the largest, and are continuous anteriorly with the labial glands, the ductsof which open on the mucous membrane of the upper lip.
Earth, water, the ducts and fluids of vegetable and of animal life, the very air we breathe, are peopled by minute organisms which perform most important functions in both the living and the inanimate kingdoms of nature.
Since his father would not return for an indefinite time Ken determined to approach President Lewis of the college regarding the use of the idle blower and ventilation ducts in the Science Hall.
I'll bet we could get permission at either place to revamp the intake and outlet ducts so we could put in our filters and precipitators.
Furthermore, as the ducts drew closer to the pumps and reconditioning units, they opened into larger vents, and the noise of the pumps thundered in his ears.
But there was a difference here, because the ductscurved just as the main ship's corridors did.
The ducts would network the ship, opening into every compartment, and no one would ever open them unless something went wrong.
In Roger Hunter's little orbit-ship the ventilation shafts were small, a loose network of foot-square ducts leading from the central pumps and air-reconditioning units to every compartment in the ship.
When the lymph is overloaded with waste products the ducts and nodes swell, and until the source of the local irritation is removed, are incapable of handling further debris.
The lymphatic system is a network of ducts and nodes which are distributed throughout the body, with high concentrations of nodes in the neck, chest, arm pits, and groin.
It is therefore believed by many geologists that it is pressure due to crustal movements and internal stresses which squeezes molten rock from below into fissures and ducts in the crust.
There is much difference of opinion as to the force which causes molten rock to rise to the surface in the ducts of volcanoes.
Now if it thus pass Interstices, that are so very small and fine along with the Water, 'tis the less strange it should attend it in its passage through the Ducts and Vessels of Plants.
They inferred various circumstances from the several ductsand the shapes and sizes of the lobes and their appendices.
The fixing of stoves of this kind entails the laying of pipes or ductsfrom the open to convey fresh air to the back of the stove.
As the ducts of Cuvier come from each side the sinus spreads out to meet them and becomes transversely elongated.
The membrane lining the ducts is swollen and inflamed.
The ducts are occluded by the swollen mucosa and plugs of inspissated mucous.
An elevation, or crest, in the wall of the urethra where the seminal ductsenter it.
Wood hard and heavy not strong, light brown tinged with red, with numerous broad conspicuous medullary rays and bands of smaller ducts marking the layers of annual growth.
These cysts really arise in theducts rather than in the gland itself.
Their ducts open a little in front of the fossa navicularis, on each side of the vaginal orifice, in the groove between the attached border of the hymen and the labium minus.
They came to the conclusion that this variety of parotitis originates in the ducts of the gland.
Recent writers attribute this complication to microbic infection of the ducts of the salivary glands (see p.
The atrium receives the secretion of two pairs of large accessory glands; and a pair of tubes, or vesiculae seminales, open, one on each side, into the divided sperm ducts close to their point of origin above the intestine.
The liver is developed as a paired gland, more or less fused into one in the adult, but the ducts are always paired.
The liver has four paired lobes in Nautilus, which open by two bile-ducts into the alimentary canal at the commencement of the intestine.
There are two oviducts (right and left) in the female, and two sperm-ducts in the male, the left duct in both sexes being rudimentary.
Parallel cases of such shifting are seen in the varying position of the orifice of the ink-bag in Dibranchiata, and in the orifice of the genital ducts of Mollusca, which in some few cases (e.
In Dibranchiata the two large lobes of the liver are placed antero-dorsally (beneath the shell in Decapoda), and the bile-ducts open into the caecum.
In the Decapoda the ducts of the posterior pair unite into a median duct which opens on the surface of the sub-radular organ.
The genital ducts pass from the genital coelom to the exterior.
In other Octopoda, and in nearly all the Oigopsida among the Decapoda, the genital ducts are paired in the female, but only the left is developed in the male.
The ducts are covered by a number of glandular follicles forming what is called the pancreas.
From each pair proceed two slender ducts which open into a median duct coiled in the posterior third of the body and much expanded in the last three of the leg-bearing segments.
The coelomic cavity appears as a symmetrical pair of spaces in the mesoderm, right and left of the intestine, and from it grow out the genital ducts and the renal organs.
Stomach with thick muscular walls and lining membrane, and a special gland near the middle of the great curvature, consisting of a mass of complex secreting follicles, the ducts of which terminate in a common orifice.
Its six to twelve ducts open on to the superior fornix of the conjunctiva.
The twoducts are bent round a small pink tubercle called the caruncula lachrymalis (fig.
First, the generative glands, chiefly confined to the cephalic region, communicating with the exterior by separateducts on the inner surface of the operculum as in Limulus.
We have, therefore, two distinct possible positions for the genital ducts among the group of extinct scorpion-like animals, the one from the cephalic region to the operculum, and the other from the abdominal region to the operculum.
In the scorpion they lie in the abdominal region, so that their ducts pass headwards to the operculum.
The two segmental ducts open into it just where it turns ventrally to open to the exterior by a median ventral anus.
From the generative glands proceed the genital ductsto terminate on the posterior surface of the operculum.
Such a gland, on my theory, was in the arthropod a part of the external genital ducts which opened on the basal joint of the operculum.
The above list will hopefully give you a few useful examples demonstrating the appropriate usage of "ducts" in a variety of sentences. We hope that you will now be able to make sentences using this word.
