The Cyclopædia of Anatomy and Physiology, Volume 5 (Google eBook)

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Sherwood, Gilbert, and Piper, Paternoster-Row., 1859 - Anatomy
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Page 39 - Not all the progeny of the primary impregnated germ-cells are required for the formation of the body in all animals; certain of the derivative germ-cells may remain unchanged and become included in that body which has been composed of their metamorphosed and diversely combined or confluent brethren; so included, any derivative germ-cell may commence and repeat the same processes of growth by imbibition and of propagation by spontaneous fission as those to which itself owed its origin; followed by...
Page 318 - The bolus, as it enters the cardia, turns to the left, passes the aperture, descends into the splenic extremity, and follows the great curvature towards the pyloric end. It then returns, in the course of the smaller curvature, and makes its appearance again at the aperture in its descent into the great curvature, to perform similar revolutions.
Page 340 - Reduced to the solid form by careful evaporation, it is a white or yellowish-white substance; almost tasteless and inodorous ; very soluble in water ; but insoluble in alcohol of eighty-three per cent. Its watery solution reddens litmus ; and is precipitated by chlorine, tannic acid, and metallic salts ; but is unaffected by boiling, by acids, or by alkalies. With alkalies and bases, it forms very soluble neutral compounds or salts. An aqueous solution of these is still less precipitable by reagents...
Page 32 - Distoma, but has a progeny gradually formed from germ cells within it, and consisting sometimes of one, but more frequently of a number of bodies which, when they arrive at maturity, present each one an external form and internal structure and locomotive powers entitling them to be considered as independent animals. Nor are these directly converted into...
Page 296 - Of these, the latter variety is the more striking and characteristic, and has been, especially in the lungs of children, the subject of more discussion than the former; but the diffused form is by far the more common, and is in fact of very frequent occurrence, at least in its slighter degrees. Both forms present the same fundamental changes of the...
Page 267 - ... inquiry, any tubes ending in a cul-de-sac ; but, on the contrary, always saw, in every section that he made, air-cells communicating with each other. He concludes from his experiments and observations, that the bronchial tubes, after dividing dichotomously into a multitude of minute branches, which pursue their course in the cellular interstices of the lobules, terminate, in their interior, in branched air-passages, and in air-cells which freely communicate with one another, and have a closed...
Page 295 - ... fibrin resembling a fragment of wet kid glove. Almost invariably, the edges of the membrane are thinner and softer than the more central portions, and the side in contact with the mucous membrane is softer than the side exposed to the air. When it extends to the bronchial tubes, Rokitansky remarks that the tubular exudations from the larger bronchi present a calibre inversely proportional to their thickness, and those thrown off from the finer ramifications occur in solid cylinders. Professor...
Page 121 - It will be observed that all these authors consider the winter-ova or ephippial ova and the ordinary ova to be essentially identical, only that the former have an outer case. The truth is that they are essentially different structures. The true ova are single cells which have undergone a special development. The ephippial ova are aggregations of cells (in fact, larger or smaller portions, sometimes the whole of the ovary), which become enveloped in a shell, and simulate true ova.
Page 340 - ... boiling, by acids, or by alkalies. With alkalies and bases, it forms very soluble neutral compounds or salts. An aqueous solution of these is still less precipitable by reagents than one of peptone itself. Thus it is only thrown down by tannic acid, bichloride of mercury, and a mixture of the acetates of ammonia and lead ; — the acetate of lead, and the ferrocyanide of potassium, causing but a faint cloudiness ; and even concentrated acids, nitrate of silver, and alum, having no effect. The...
Page 342 - ... processes. From these, according to this faithful observer, the gastric juice appears to exsude. Its secretion begins by the gradual appearance of innumerable lucid specks, which are smaller...

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