Here therefore we have a case exactly parallel to that of the Thuja-shoot in which the palisade or spongy parenchyma is developed according to the position in which the shoot is fixed.
These may be {54} present as a variously modified exudation or as a degenerated condition of the parenchyma of the organ or tissue affected.
In ulcerative endometritis, and even in the extreme catarrhal form, the parenchyma of the uterus likewise becomes involved.
The commonest of the latter are inflammations of the parenchyma of the lungs.
As regards the absorption of water, his idea was simply that the roots sucked up water like a sponge, because the parenchyma was of a spongy nature.
These larv\'91 feed in groups on the parenchyma of the leaves of rosebushes, and are often abundant and very destructive.
Heterangium A, Half of the stele of a stem, showing the central mass of wood S mixed with parenchyma p.
Wood parenchyma around pores or extending wing-like from pores in late wood, often forming irregular tangential lines.
Pores in late wood small and in radial lines, wood parenchyma in inconspicuous tangential lines.
Coniferous woods have no pores, their rays are always narrow and inconspicuous, and wood parenchyma is never prominent.
Wood parenchyma lines should be looked for, and if present, the arrangement of the lines should be noted.
Wood parenchyma is found in all woods, arranged sometimes in tangential lines, sometimes surrounding the pores and sometimes distributed over the cross-section.
Hickory is readily separated from ash by the fine tangential lines of wood parenchyma and from oak by the absence of large rays.
In the central mass of parenchyma no internal organs are recognisable, but Leuckart observed indications of a canal which he thought might open at the tail, though the opening itself was not actually visible.
Of this description is that of a moth, whose abode, except as to the materials which compose it, is formed on the same general plan as that just described, and the larva in like manner feeds only on the parenchyma of the leaf.
Examine the place from which you have removed it, and you will perceive a round excavation in the cuticle and parenchyma of the leaf, the size of the end of the tube by which it was concealed.
As regards size, the epidermal cells overlying the sclerenchyma are small and those lying overparenchyma are larger.
Another stem in which the vascular bundles are more or less peripheral in position and enclosing a wide parenchyma is that of Setaria glauca.
Drimys (Magnoliaceae) closely resemble conifers in the homogeneous character of the wood, but in most cases the presence of large spring vessels, wood-fibres and abundant parenchyma affords an obvious distinguishing feature.
In the Abietineae the phloem consists of parenchyma and sieve-tubes only, but in most other forms tangential rows of fibres occur in regular alternation with the parenchyma and sieve-tubes.
The characteristic companion-cells of Angiosperms are represented by phloem-parenchyma cells with albuminous contents; other parenchymatous elements of the bast contain starch or crystals of calcium oxalate.
The protoxylem-elements are situated at the extreme inner edge of the secondary wood, and may occur as small groups of narrow, spirally-pitted elements scattered among the parenchyma which abuts on the main mass of wood.
In many genera xylem-parenchyma is present, but never in great abundance.
He tells us this:-- "The blood does not take its course through the looser texture of flesh and parenchyma in the same way as through the more compact consistency of tendinous parts.
We have found him acknowledging that in some animals some sort of concoction also of the blood destined for the arteries may be brought about by the pulmonary parenchyma as a function of secondary importance.
Harvey also cites Galen as saying that the parenchyma of the lung concocts spirits out of air as the flesh of the liver concocts the blood.
Any of numerous insects which, in the larval state, excavate galleries in the parenchyma of leaves.
The parenchyma of a leaf between the skin of the two surfaces.
This parenchyma should therefore be subjected to a separate rasping upon another cylinder.
The parenchyma of the beet is a spongy mass, whose cells are filled with juice.
The solid matter consists of fragments of the cellular parenchyma of the cane, its fibres, and bark, mechanically protruded through the mill; mixed with a very abundant greenish substance, like that called chlorophyle by chemists.
The seeds contain a bitter substance and a little essential oil; the pure parenchyma or cellular membrane constitutes not more than two per cent.
Parenchyma cells form the remainder of the spermoderm; and these are partially obliterated, so that the structure is not easily seen, appearing almost like a solid membrane.
Surface view of ep, epicarp, and p, outer parenchyma of mesocarp.
It consists of two elements--sclerenchyma andparenchyma cells.
Moeller)] The layer next to this is a soft tissue, parenchyma (Fig.
The raphe runs through the parenchyma found in the cleft of the berry.
Moreover, the cells of the prothallium resemble those of the parenchyma of a leaf, the epidermis with its wavy-margined cells being absent.
This fills the interstices between the other tissues and organs of animals, in the same manner that the vegetable parenchyma does those of plants.
In both simple and compound leaves, according to the amount of segmentation and the mode of development of the parenchyma and direction of the fibro-vascular bundles, many forms are produced.
When the development ofparenchyma is such that it more than fills up the spaces between the veins, the margins become wavy, crisp or undulated, as in Rumex crispus and Rheum undulatum.
When theparenchyma is developed symmetrically on each side of the midrib or stalk, the leaf is equal; if otherwise, the leaf is unequal or oblique (fig.
By a deficiency in development of parenchymaand an increase in the mechanical tissue, leaves are liable to become hardened and spinescent.
These constitute a hypodermal layer, beneath which the chlorophyll cells of the parenchyma are densely packed together, and are elongated in a direction vertical to the surface of the leaf, forming the palisade tissue.
In skeleton leaves, or leaves in which the parenchyma is removed, this arrangement is well seen.
The valves furnish nacre, and the parenchyma the pearls.
When they are adherent to the valves they are detached with pincers; but, habitually, they are found in the parenchyma of the animal.
Bile secreted in excess by a diseased liver would give a green hue to the parenchyma of the respiratory organs of an animal rendered sick by the exceptional treatment to which it has been subjected.
The cortex proper, consisting of parenchyma cells, pa, some of which contain crystals.
This new cork-forming tissue behaves as before: the outer cells become cork, the inner ones add to the green succulent parenchyma cells (pa).
Does the humidity deposited on the parenchyma by the cooling of the leaves, which is the effect of the nocturnal radiation, prevent the action of the first rays of the sun?
The central parenchyma becomes void of sap and spongy, because the plant imbibing its nutriment on the surface, and the air and the light operating thereupon, the processes conduct it thither.
The cellular tissue does not continue a mere parenchyma in the animal as in the plant, but it obtains a definite anatomical form.
This withered parenchyma is called pith, which in accordance with its origin merits no physiological consideration, nor is worthy and susceptible of any philosophical construction.
This seed-lobe is a phylloidal leaf, whose parenchyma has been superabundantly filled with farinaceous matter or flour.
As the air-tubes pass to all parts of the body, like the arteries whose place they now supply, so does the nutritive juice become everywhere oxydized and converted into parenchyma or tissue.
With increased influence of light the tracheal fasciculi also increase, and form a circle of columns in the parenchyma around the centre of the plant.
The parenchyma has now been separated by a circle of fibrous columns into an external and internal, or peripheric and central.
But a new life develops itself in the parenchyma of the plant, and forms new liber or, properly speaking, a new plant about the old.
Parenchyma constitutes the pith rays and other similar fibers, retains its protoplasm, and becomes filled with starch in autumn.
Microscopically the white pine can be distinguished by having usually only one large pit, while spruce shows three to five very small pits in the parenchyma cells of the pith ray communicating with the tracheid.
Parenchyma is composed of vertical groups of short cells, the end ones of each group tapering to a point, and each group originates from the transverse division of one cambium cell.
In some of my cuttings of Beans, the stem cracked in four long lines before the roots had really formed, showing the parenchyma in small hillocks, so to speak.
It is composed of the exterior fibres of the leaf-bases themselves, which in process of growth have partially separated themselves, and from which the parenchyma and the lamina have decayed away.
Presently it secreted and deposited calcareous matter around at, like a coating of the thinnest glass, the red parenchyma receding from the hyaline wall towards the centre.
The parenchyma in the darker places on section did not crepitate.
The above list will hopefully give you a few useful examples demonstrating the appropriate usage of "parenchyma" in a variety of sentences. We hope that you will now be able to make sentences using this word.
