. Elements of histology. Histology. Periphera l Ner ve-endings. becoming fused with the sarcolemuia, and the nerve fibre, either at tlie point of entrance or immediately afterwards, loses its medul- lary sheath, so that only the axis cylinder, with its axi- lemma, })asses on, and then forms on the sui'face of the muscular substance a ter- minal arborisation or den- dron, which is called the nerve endpJate. Each axon, on entering, gives off by division several branches like antlers : in amphibia these branches are rodlike, long, and of the form of baj^onets ; in mammals they are crooked, hook-l
. Elements of histology. Histology. Periphera l Ner ve-endings. becoming fused with the sarcolemuia, and the nerve fibre, either at tlie point of entrance or immediately afterwards, loses its medul- lary sheath, so that only the axis cylinder, with its axi- lemma, })asses on, and then forms on the sui'face of the muscular substance a ter- minal arborisation or den- dron, which is called the nerve endpJate. Each axon, on entering, gives off by division several branches like antlers : in amphibia these branches are rodlike, long, and of the form of baj^onets ; in mammals they are crooked, hook-like. In all instances, however, the divisions are unsymmetri- cal. In many cases the arborisation of the endplate is embedded in a granular mass of protoplasm con- taining oblong nuclei. This nucleated protoplasm is identical with the substance of the sarcoglia, or the sarcoplasm mentioned on a former page. When the muscular fibre contracts, this endplate naturally as- Fig. 117.—Muscle Spindle of the sumes the shape of a pro- ^'^l^^it treated with gold chio- t J i iide. (Kolliker, II.) mmence — Boyere s nerve „^ ^^^^,.^ q^,,,^ terminating' iu the Oiinoi'^if ^^'npl^ mnQpnlnr middle p;iit of the spiiidlt- us a lUOUlil. JLaCil mUbCUiai spiral endiDg of fine 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 Klein, E. (Edward), 1844-1925; Edkins, John Sydney, b. 1865. Philadelphia : Lea Brothers
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Keywords: ., bookcentury1800, bookdecade1890, bookpublisherphiladelphialeabro
