Closer investigation proved that the creature was totally blind,[99] and thus incapable of assuming the color of the objects around it, the eyes being unable to act as a medium of communication between them and the chromatophores of the skin.
He observed these latterchromatophores in a fish belonging to Gobius, the classical name of which is Gobius ruthensparri.
The chromatophores in the larva of Vanessa are very numerous, and this grub is a remarkably successful tinctumutant; the same can be said of the larvæ of certain varieties of Pieris.
There is a marked difference between the functions of the chlorophyll bodies found in plants and the chromatophores found in animals.
The skin of this fish retains its vitality for some time after its removal from the body of the living animal, and the chromatophores will respond to artificial irritation for quite a while.
If the web of a frog's foot be placed on the stage of a microscope and examined with an achromatic lens, the chromatophores can readily be made out.
He then divided the sympathetic nerves, and the chromatophores lost at once the power of contraction; he thus demonstrated that the sympathetic nerves were the transmitters of the optical message, and not the cord.
Of course, when animals are subjected to darkness for very long periods of time, the chromatophores are modified, and, sometimes, are wholly obliterated.
The chromatophores were as abundant and responded to irritation as promptly in the one as in the other.
As soon as the optic nerve was severed, the chromatophores ceased to respond to the influence of light and color, no matter how bright and varied they were.
When all the chromatophores are dilated, a dark color will predominate; when they are contracted, the skin becomes lighter in color.
Pouchet cut the spinal cord close to the brain, yet the chromatophores still responded to light impression, showing that they did not receive the message through the cord and spinal nerves.
The chromatophores will not respond to light impressions if the animal be placed thoroughly under the influence of atropine.
When all the pigment is shifted towards the surface, as near the epidermis as possible, the creature looks black; when the black pigment is withdrawn into the basal portions of the chromatophores the skin appears yellow.
The characteristic brown colour of diatoms is due to the presence of chromatophores embedded in the lining layer of protoplasm.
The chromatophores contain a variable number of pyrenoids, colourless proteid bodies of a crystalloidal character.
The chromatophores are at first scattered irregularly over the yolk-sac and show their characteristic ramifications.
The writer found that the former is entirely, and the latter at least in part, due to the creeping of the chromatophores upon the blood-vessels.
Certain observations seem to indicate the possibility that in the adult the chromatophores have, in some forms at least, a more rigid structure and are prevented from acting in the way indicated.
The writer is inclined to believe that we are here dealing with a case of chemotropism, and that the oxygen of the blood may be the cause of the spreading of the chromatophores around the blood-vessels.
The protoplast is uninucleate and vacuolate, and contains chromatophoresof a brownish colour.
In these algae, the colouring matter is said to be yellowish-green, not strictly green, and contained in numerous small discoid chromatophores which are devoid of pyrenoids.
Chromatophores may or may not be present and food-taking is holozoic, in many cases at least.
Chromatophores of brown or green colors present and usually grouped radially about a central amylum granule.
Brown chromatophores arranged radially, each in the form of a cone, the base of which rests against the shell while the points turn inward.
Brown chromatophores may or may not be arranged radially about a central amylum granule.
When the strong stimulus (of light) ceases, the chromatophores expand again, and the skin becomes dark.
The changes in the shape of the chromatophores of the skin are not produced by the direct influence of the different rays of light upon the body-surface, but in consequence of the action of these rays upon the retina.
Certain chromatophores in the skin are connected with nerves[204] which pass to the brain and are there brought into relation, by means of nerve-cells, with the nervous centres of the organ of vision.
According to Karsten there are two chromatophores on the connective zone, each divided into four parts, each of which contains a large oval pyrenoid.
Mereschkowsky, however, says that thechromatophores always contain more pyrenoids than are found in Navicula.
Chromatophores single, with indented border except in A.
Endochrome consists of two chromatophores lying on the zones.
Chromatophores and conjugation have not been determined.
Karsten states that in the marine forms the chromatophores are oval or polygonal discs, each of which usually encloses a pyrenoid.
Chromatophores four, two on each of the zones (Mereschkowsky).
According to Karsten the chromatophores are round or angular discs which lie near the connective zone.
Endochrome of two chromatophores lying one on each valve, entire in some species and deeply cleft in others.
Chromatophores numerous, small, elongated, in irregular rows on the zone (Pfitzer).
Chromatophores in rosettes of various kinds (Karsten); usually parallel to the septa.
Chromatophores two, in long and narrow bands, perforated, differing from those of Pleurosigma.
The above list will hopefully give you a few useful examples demonstrating the appropriate usage of "chromatophores" in a variety of sentences. We hope that you will now be able to make sentences using this word.
