Bauhaus-Universität Weimar

The Cyclopaedia of Anatomy and Physiology, vol. 5: Supplementary Volume
Todd, Robert Bentley
man and other mammalia, is proved by the with the walls of the included ganglionic cor- 
observations of Schrœder van der Kolk in puscle, and appears to hold much the same 
Fig. 287. 
Fis. 288, 
a. Spinal ganglion from the Ray. (40 diam.) for them an investment or sheath similar to 
b. Portion of the same more separated. that which it forms for the corpuscles them- 
the Gasserian ganglion of the cat. In the fibres in the ganglia, when one of the enter- 
common trunk of the pneumogastnc and ing brancheS in the ganglia of small animals, 
sympathetic nerves in the middle of the neck guch a§ the mouse? is traced into the point at 
m the young calf, oval cells may be seen which which it joins the ganglion, it is found to 
have distinctly attached at their peripheral s d out somewhat, and soon breaks up 
extremity a nerve-fibre ; and some of them intQ its component fibres. These separate 
also appear to be connected with one at the from one another, running amongst the gan- 
opposite or central extremity. glionic corpuscles, either singly or in bundles 
The différent cells composing a ganglion are twQj tbreej or more. The nerve-fibres be- 
each surrounded by a more or less clear, homo- ionging t0 one bundle leave it and join neigh- 
geneous substance, m which are contained a bourjng bundles, so that a more or less corn- 
number of round or oval nuclei. These aie p]ete interchange of the fibres contained in 
seen to form a single or double row around tbe ddferent bundles takes place; and at the 
the margin or the ganglionic vesicle, their long same time there is formed a sort of plexus or 
axis being directed in the axis of the cir- netWOrk, in the meshes of which the ganglionic 
cumference of the cell {fig. 288.). They are corpuscles are imbedded (fig. 287.). Some- 
also seen upon the surface of the corpuscle (c, times, as Valentin observed, one or more of 
fig. 288.). This substance not unfrequently the fibres of one of the entering bundles are 
presents a more or less fibrous aspect, as if seen to wind round the ganglionic corpuscles, 
composed of spindle-shaped corpuscles. It re- and appear again to pass into another entering 
semblés much (as has been already stated) the bundiej thus pursuing apparently a retrograde 
fibres of Remak. The nuclei measure from the course> The fibres which thus surround the 
«nnnrth to the of an inch in breadth, and gangiionjc vesicles were termed by Valentin 
about voVdth to x^g-th of an inch m length, umspinnende fasern ; whether they again 
The structure in question is closely connected ready }eave the ganglion in the direction in 
* Kölliker’s Mikroskopische Anatomie, band ii. which they entered it, and in this way may be 
p. 519. 
regarded as terminating in a looped arrange-


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