The epidermal laminae are therefore like low pyramids only in appearance.
He stated that epidermal growth took place at the margins of the laminae rather than over their entire under-surfaces.
Growth of epidermal laminae is presumably stimulated by growth of the bony shell.
Such a blow is usually sufficient to crack or chip the shell, or at least to scuff away parts of the epidermal covering.
Major growth-rings on the epidermal laminae are formed regularly, one after each season of growth, in the first 10 to 14 years of life.
The few publications discussing growth in turtles express conflicting views as to the exact mode of growth of epidermal laminae.
Areolae that are retained in some older turtles are shed along with the epidermal layers formed in the first year or two of life.
When growth begins, the areas of newly formed epidermal tissue on the anterior and medial borders of each areolar scute are pale.
When the epidermal laminae are removed, a sheet of tough, pale grayish tissue remains firmly attached to the bones of the shell beneath.
Growth of epidermal laminae results from the formation, in spring, of a new layer of epidermis beneath the existing scute.
Of those cases which have been recently examined, the author found all were due to the invasion of Mucorales beneath the plates of the epidermal laminae.
Many of the hatchlings in the laboratory showed no areas of new epidermal growth on the shell in the time between hatching and first (induced) hibernation.
The radial marks, sharply defined and straight-sided, appear only on the newly formed parts of the epidermal laminae.
So closely does the epidermal portion of the follicle invest the hair root that it is often dragged out with it, and is known as the Root Sheath.
This epidermal irruption of the corium takes place at definite points right round the foot.
The horny laminæ are simply beautifully regular epidermal ingrowths cutting up the corium into minute leaf-like projections.
So large is it in many cases that the complete covering of the exposed surface with epidermal growths from the circumference cannot possibly be looked for.
The surface of the body, though smooth to the naked eye, is clothed throughout with small epidermal spines which diminish in size towards the tail.
These cysts have a wall which is almost an exact duplicate of the structure of the skin, and frequently contain epidermal structures, such as hair and teeth, which, in the development of the embryo, have been misplaced.
The use of epidermal characteristics for the identification of plants recovered in fragmentary condition from the crops of grasshoppers.
Solely to the invasion of the cutaneous structures, especially the epidermal portion, by the vegetable parasite, the achorion Schönleinii.
The applications, which act by removing the epidermal and rete cells and with them the pigment, are made two or three times daily, and their use intermitted for a few days as soon as the skin becomes irritated or scaly.
Anatomical studies show that the lesion has in some respects the structure of an ordinary wheal, with [oe]dema and pigment deposit in the epidermal portion, and cellular infiltration made up principally of mast-cells.
As the disease spreads the oldest part becomes dry and heals, the new epidermal covering being thin and atrophic in appearance.
A layer of tissue beneath the epidermis in plants, and performing the physiological function of strengthening the epidermal tissue.
The epidermal cells of rootlets, specially adapted to absorb liquids.
The epidermal cells of this leaf are large and uniformly round.
The epidermal cells have even surfaces in the leaves of most grasses but in some they bulge out.
As regards size, the epidermal cells overlying the sclerenchyma are small and those lying over parenchyma are larger.
Although the motor-cells differ in shape from the ordinary epidermal cells in most grasses, there are, however, a few grasses in which the motor-cells do not differ very much from the epidermal cells except in size.
The arrangement of the stomata, the shape of the guard cells and the characteristics of the epidermal cells become clear on examining a piece of epidermis.
The epidermal cells and those below and in contact with them are thick-walled.
The epidermal cells are all thickened very much and the outer layer is cutinized and impregnated with silica.
The epidermal cells lying over sclerenchyma and the smaller vascular bundles are small and round, while those lying over the furrows between the vascular bundles are large and are called =motor= or =bulliform cells=.
For example, in the leaves of Panicum colonum the motor-cells are just like the ordinary epidermal cells in shape but are larger.
The epidermal cells as well as the lower cells are thickened in the stems of Panicum fluitans and Panicum Crus-galli, but in the stems of Panicum colonum and Panicum flavidum the epidermis alone is thickened.
The epidermal cells as well as the layer of cells in immediate contact with it are thick-walled.
A well developed continuous ring of sclerenchyma is present and this is connected with the epidermal layer at short intervals by means of short sclerenchymatous bands.
The epidermal colours are produced in the external layer or epidermis which is comparatively dry, and are persistent, and do not alter after death.
Hagen has divided the colours of insects into two classes, the epidermaland hypodermal.
The connection thus shown between decoration and transparency seems to suggest that hypodermal colour is the original, and epidermal the newer scheme: that the latter was derived from the former.
In all the forms of life hitherto considered the colouring matter is deposited, or formed, in the substance of the organ, or epidermal covering, but in the mollusca this is not the case.
Speaking generally of epidermal tissue and inner tissue, Sachs remarks that "the contrast of the two is the plainer the more the part of the plant concerned is exposed to air and light.
Snakes are covered with epidermal folds in the form of scales and shields, the shape and arrangement of which affords important characters for their classification.
A Nail* is a tough and rather horny plate of epidermaltissue which grows from a depression in the dermis, called the matrix.
A Hair* is a slender cylinder, formed by the union of epidermal cells, which grows from a kind of pit in the dermis, called the hair follicle.
Material for the growth of the nail is derived from the matrix, which is lined with active epidermal cells and is richly supplied with blood vessels.
The latter function is especially marked in the lower animals, the coverings of epidermal tissue (hair, scales, feathers, etc.
They form a superficial mycelium on the surface of the plant, the hyphae not usually penetrating the tissues but merely sending haustoria into the epidermal cells.
Epidermal sense buds are scattered about in the ectoderm of fishes.
We have seen that in Arthropods the body of the vertebra (cycleal) forms the open ring of the segment, which lies immediately under the skin, the vertebral tube coinciding with the epidermal tube.
A few years before, Robert Brown had called attention to the presence in the epidermal cells of orchids and other plants of a characteristic spot which he called the areola or nucleus.
Next there are the assemblages of cells lying in contiguity with one another, but not in any way fused; examples of this class are the epidermal tissues and the lens of the eye.
In a few animals, such as Lampreys and Ornithorhynchus, the jaws bear horny tooth-like structures of epidermal origin.
The =teeth= are exoskeletal structures, partly of dermal, partly of epidermal origin.
The epidermalexoskeleton also includes the horny =claws= borne by the first three digits of both manus and pes.
Sometimes scales or spines occur, and epidermal exoskeletal structures in the form of hoofs, nails, claws and horns are also characteristic.
Horny =beaks= of epidermal origin occur casing the jaw-bones in several widely distinct groups of animals.
Two other sets of structures belong also to the epidermal exoskeleton, viz.
The anterior part of the body is mainly covered by horny epidermal plates with very little ossification beneath.
The =baleen of whales= also belongs to the epidermal exoskeleton.
Except in very young individuals the epidermal scales are rubbed off from these scutes, which consequently come to project freely on the surface of the body.
The =epidermal exoskeleton= is formed of a number of horny =scales= or plates of variable size covering the whole surface of the body.
The claws of beasts of prey, the hooves of the hoofed mammals, and the outer horny sheaths of the hollow-horned ruminants are all epidermal structures.
The epidermal covering of snakes and lizards is periodically molted, or, as we say, the skin is shed.
Most mammals are externally clothed with hair, which is a peculiarly modified epidermal process.
Again, "It is produced by the activity and division of certain merismatic cells known as phellogen or cork cambium which are situated immediately within the epidermal covering of the young growth.
There will be found an appreciable shortening of the epidermal tissues and a marked increase in length of the pith.
The above list will hopefully give you a few useful examples demonstrating the appropriate usage of "epidermal" in a variety of sentences. We hope that you will now be able to make sentences using this word.
