Manual of human histology . servers, to suppose that they com-mence by one or two csecal branches,yet recently, more and more voices ap-pear to be raised for the view that theyoriginate in a plexiform manner. As tomy own opinion, I can affirm nothingwith respect to the human subject, sinceI have never succeeded in meeting withvilli distended with chyle, and in emptyones, I have been unable to obtain anydecisive evidence: on the other hand,in animals, I feel certain that in manycases only a single lacteal, which hasa csecal and frequently enlarged end,and whose diameter is much greaterthan that


Manual of human histology . servers, to suppose that they com-mence by one or two csecal branches,yet recently, more and more voices ap-pear to be raised for the view that theyoriginate in a plexiform manner. As tomy own opinion, I can affirm nothingwith respect to the human subject, sinceI have never succeeded in meeting withvilli distended with chyle, and in emptyones, I have been unable to obtain anydecisive evidence: on the other hand,in animals, I feel certain that in manycases only a single lacteal, which hasa csecal and frequently enlarged end,and whose diameter is much greaterthan that of the capillaries, traverses theaxis of the villus (fig. 209). For my own part in fact, I believe thatall the narrow cylindrical and filiformvilli will be found to present this con-dition, but that, on the other hand,the number and mode of origin of the lacteals may possibly Fig. 209. Two villi without epithelium and with the lacteal in their interior, fromthe Calf, X 350, and treated with dilute solution of caustic TIIF. INTESriNKS. 95 Fig. 210.


Size: 1003px × 2492px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: ., bookcentury1800, bookdecade1850, booksubjecthistolo, bookyear1853