Comentarios de la gente - Escribir un comentario
No encontramos ningún comentario en los lugares habituales.
Otras ediciones - Ver todas
absorbed according acid action animals appears Archiv arteries become blood body bone brain branches canal capillaries carbonic acid cause cavities cells chemical chyle circulation coagulation colour communication connected consequence consists contains continued contraction dependent developed digestion divided duct effect electric excited exist experiments external extremities fact fibres fibrin fishes fluid force formation frog give glands globules greater heart heat increased inflammation influence injected intestines irritation less living lungs lymph lymphatics matter means membrane merely minute motion mucous muscles muscular nature nerves nervous observed organic organised oxygen pass portion present principle probable produced properties proportion prove quantity red particles remarkable respiration result rise roots salts secretion seen sensation separated side similar skin solution spinal cord stimulus stomach structure substance supposed surface sympathetic takes place temperature tion tissue tube urine veins venous vessels vital
Página 385 - Dr. Beaumont [of St. Martin celebrity] has instituted several experiments with a view to determine the power of acids in dissolving articles of food; and the results which he obtained, although they varied somewhat according to the substances employed in the experiments, have nevertheless led him to the conclusion that no other fluid produces the same effect on food which the gastric juice docs, and that IT is the only solvent of aliment
Página 512 - On laying bare the roots of the spinal nerves, I found that I could cut across the posterior fasciculus of nerves, which took its origin from the posterior portion of the spinal marrow without convulsing the muscles of the back; but that on touching the anterior fasciculus with the point of the knife, the muscles of the back were immediately convulsed.
Página 702 - ... of all objects, even of our own limbs, in the retina are equally inverted, and therefore maintain the same relative position. Even the image of our hand while used in touch is seen inverted. The position in which we see objects we call, therefore, the erect position. A mere lateral inversion...
Página 192 - The course of the blood from the right side of the heart, through the lungs, to the left...
Página 560 - The parts which are supplied with motor power by the sympathetic nerve continue to move, though more feebly than before, when they are separated from their natural connections with the rest of the sympathetic system, and wholly removed from the body.
Página 764 - For nearly the first twelve months he stated that he had emissions in coitu, or that he had the sensations of emission. That then he had erections and coitus at distant intervals, but without the sensation of emission. After two years he had erections very rarely and very imperfectly, and they generally ceased immediately upon the attempt at coitus.
Página 330 - Nay, if we judge according to what is known from universal observation, as well as from experiments which have been actually made by physiologists regarding food ; we are led to the directly opposite conclusion, namely, that the more perfect animals could not...
Página 86 - ... degrees of heat. This amount of heat is sufficient to raise the temperature of 1 oz. of water by that number of degrees, or from 32° to 197509-3°; or to cause 136-8 Ibs.
Página 419 - A remarkable sympathy is observed to exist between the mucous membranes ; thus their diseases, particularly the mucous discharges and the catarrhal affections, have a great tendency to spread in them. By virtue of this sympathy, the state of one part of these membranes may be ascertained by examining another, so that the state of the mucous membrane of the tongue indicates the condition of that of the stomach and intestinal canal.