Bauhaus-Universität Weimar

The Cyclopaedia of Anatomy and Physiology, vol. 5: Supplementary Volume
Todd, Robert Bentley
surfaces may here be traced along the mar¬ 
gin where the tube wall terminates. Here 
the peritoneal or outer covering of the tube 
may be observed to cease suddenly in the 
form of a distinct boundary line, as in the 
example represented in fig. 407. But oc¬ 
casionally the peritoneal coat is prolonged 
upon the base of the principal leaflets which 
crest the end of the canal, and in that case 
a closer examination is necessary in order to 
discover the line of union between the mu¬ 
cous and the serous surfaces. 
The fimbriœ, laciniœ (\aui s), or morsns dia- 
boli. —The structure and compostion of these 
appendages differ in no respect from those of 
the plicae or folds of which they are merely 
continuations. These fimbriae present many 
varieties of form, but are generally either pe- 
tiolate, lanceolate, or simply filiform. Their 
margins are in some cases coarsely crenate* 
like those of the tubal plicae, while in other 
instances they are so finely indented, as to 
require the use of a lens for their examina¬ 
tion. The greater number of these fimbriae 
are attached to the sides or margins of the 
infundibulum by their narrower extremity 
only, like leaves thickly clustered on the, 
branches of a tree, while the more obtuse ex¬ 
tremity of each leaflet is left free, apparently 
with the object of increasing the extent of 
surface of the tube-mouth, w'hich may be 
applied to the superficies of the ovary. But 
very commonly one or two fimbriae are ob¬ 
served to be firmly attached by both ends, 
while the body extends horizontally in the 
form of a flattened band among the rest of 
the fringes, as at fig. 403. d. The backs of 
these are always covered by a continuation 
Abdominal end of right Fallopian tube, from an adult. (After Richard.') 
a, fimbriae irregularly formed ; cc, bristle passed through an accessory pavilion ; d, horizontal band 
across the mouth of the tube formed by one of the fimbriae having both ends fixed ; g h, pedun¬ 
cle ending in fringed processes, probably' the terminal portion of the Wolffian duct. (See fig. 401. 
f and explanation.) i, body of Fallopian tube ; k, ovary. The tubo-ovarian ligament and fringes are 
well developed in this specimen. 
of the serous membrane. It is difficult to 
imagine a use for them unless they are placed 
there as a safeguard to diminish the risk of 
a retrograde movement and escape of the 
ovum after it has entered the tube along one 
cf the furrows formed between the plicæ. 
The length of the fimbriae ranges from 
to f". The principal leaflets, being con¬ 
tinuations of the 4 — 6 main plicae of the tube, 
exceed the rest in size, and these, spreading 
like rays, form the more salient points of 
the fringes, while the intermediate spaces are 
filled up by the smaller appendages. 
Intermixed with the latter are often seen 
minute pedunculated cysts, and especially 
little white hard grains, the size ot millet 
seeds, first noticed by De Graaf. Similar 
grains are often observed upon the mesentery 
of the tube, or attached to the outer surface of 
the tube itself ( fig. 404.). 
The Tubo-ovarian ligament and fringes. — 
This so-called ligament (fig. 408.) consists of 
one of the fimbriae, which is almost con¬ 
stantly prolonged upon the outer margin or 
base of the triangular mesentery of the tube. 
Extending in the form of a slight furrow 
or channel (fig. 404. d and fig. 405. e), be¬ 
tween the outer extremity of the ovary and the 
inner or lower border of the tube, it is mar¬ 
gined on either side by a row of leaflets, pos¬ 
sessing shapes as variable as those which 
characterise the rest of the lesser fringes. 
These leaflets, as well as the furrow' between 
them, are backed by a continuation of the 
peritoneal fold or mesentery, which, after 
enclosing the tube, here terminates abruptly 
on a level with its mouth, and thus is pro¬ 
duced the appearance of a ligament, whose 
use is simply to preserve the tubal orifice in 
contiguity to the ovary; but there is no


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