. Quain's elements of anatomy . kiihn. The agminated glands or glands of Peyer (who described them in1G77), are groups or patches of lymphoid nodules. The groups havean oblong figure (fig. 529), and vary from half an inch to two or evenfom inches in length, being about an inch, or rather less, in width :they are placed lengthways in the intestine at that part of the tubemost distant from the mesentery; and hence, to obtain the bestview of them, the bowel should be opened by an incision along itsattached border. The lymphoid nodules which by their aggregation make up a Peyerspatch are in almost
. Quain's elements of anatomy . kiihn. The agminated glands or glands of Peyer (who described them in1G77), are groups or patches of lymphoid nodules. The groups havean oblong figure (fig. 529), and vary from half an inch to two or evenfom inches in length, being about an inch, or rather less, in width :they are placed lengthways in the intestine at that part of the tubemost distant from the mesentery; and hence, to obtain the bestview of them, the bowel should be opened by an incision along itsattached border. The lymphoid nodules which by their aggregation make up a Peyerspatch are in almost aU respects similar to the solitary glands abovedescribed. As a rule their surface is free from villi, and the cryptsof Lieberkiilm are collected in circles around them. Fine blood-vesselsare distributed abundantly on the exterior of the follicles, and give offstill finer capillary branches, which, supported by the retiform tissue,are disposed principally in lines converging to the centre (fig. 530). G06 THE SMALL IXTESTIJs^ The lacteal plexuses, which are abundant in the whole extent of theintestine, are especially rich where they surround the follicles of Peyers Fig. 529.—A SMALL PATCH OP Peyers glands iROil THE ILIUM. SLIGHTLY MAGNIFIED (Bcelim). glands (fig. 531), often forming sinusesaround them, as in the case of the solitaryfollicles above described. In all, from twenty to thirty of these oblongpatches may in general be found : but in youngpersons dying in health, as many as forty-fivehave been observed. They are larger and placedat shorter distances from each other in the lowerpart of the ileum ; but in the upper portion ofthat intestine and in the lower end of thejejunum the patches occur less frequently,become smaller, and are of a nearly circularform ; they may, however, be discovered occa-sionally in the lower portion of the smaller Irregularly shaped clusters of thesefollicles are sometimes found scattered through-out the intestine. The glands
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