. Elements of pathological anatomy. Anatomy. :ct. i.] STRUCTURE. 249 Fiar. 10 * layer of cellular matter ; and, in some situations, they lie so far apart as to appear like so many mus- cles. By dissection, these bundles can be divided into fibres, which are ren- dered still more conspicuous by boiling, or immersion in alcohol. The form of these fibres, which is nearly the same in all parts, is prismatic, pentagonal, or hex- agonal, but never cylindrical ; and they appear to extend in a continuous manner from one extremity of the muscles to the other. This arrangement, we are in- formed by Proc
. Elements of pathological anatomy. Anatomy. :ct. i.] STRUCTURE. 249 Fiar. 10 * layer of cellular matter ; and, in some situations, they lie so far apart as to appear like so many mus- cles. By dissection, these bundles can be divided into fibres, which are ren- dered still more conspicuous by boiling, or immersion in alcohol. The form of these fibres, which is nearly the same in all parts, is prismatic, pentagonal, or hex- agonal, but never cylindrical ; and they appear to extend in a continuous manner from one extremity of the muscles to the other. This arrangement, we are in- formed by Prochasca and Bichat, actu- ally obtains, even in the longest muscles, as the gracilis and sartorius. The ultimate filament (Fig. 11) has been carefully examined by a great many distinguished physiologists, but thus far, owing to its excessive tenuity, no very satisfactory information has been elicited. It is thought by some to consist of a se- ries of rounded corpuscles, about the two thousandth part of an inch in diam- eter, which are connected by cellular substance so as to look like a string of pearls or a row of beads. It is pretty gen- erally agreed, however, since the publica- tion of the researches of Hodgkin, Lister, Grainger, and others, that this view is in- correct, the observations of these gentle- men having led them to conclude that the ultimate filament is a peculiar pulpy struc- ture, arranged into threads of extreme mi- nuteness, which are placed close and par- allel to each other, and intersected by a great number of the most delicate trans- verse lines. Similar results were obtained, long ago, by Thus formed, the muscles are enclosed, in general, by an aponeurotic sheath, the. 11.+. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Gross, Samuel D. (Samuel David), 1805-1884. Boston, J
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Keywords: ., bookauthorgr, bookcentury1800, bookdecade1840, booksubjectanatomy
