Microscopic Journal, and Structural Record . ^ plexus. On the other hand, in the kidney, the efferentvessels of the Malpighian bodies, situated near the medullary cones,having to supply the plexus of the cones, which is at some little dis- 344 EXTRACTS AND ABSTRACTS FROM FOREIGN tance, are often large, and divide themselves after the manner of anartery. They are portal veins in miniature. In further confirmation ofhis view of the existence of a true portal system in the kidney of thehigher order of animals, where it has never hitherto been suspected, theauthor describes his observat
Microscopic Journal, and Structural Record . ^ plexus. On the other hand, in the kidney, the efferentvessels of the Malpighian bodies, situated near the medullary cones,having to supply the plexus of the cones, which is at some little dis- 344 EXTRACTS AND ABSTRACTS FROM FOREIGN tance, are often large, and divide themselves after the manner of anartery. They are portal veins in miniature. In further confirmation ofhis view of the existence of a true portal system in the kidney of thehigher order of animals, where it has never hitherto been suspected, theauthor describes his observations on the circulation through the kidneyof the boa constrictor, an animal which affords a good example of thosein which portal blood derived from the hinder part of the body traversesthe kidney. He shows that here the Mal-pighian bodies are supplied, as elsewhere, bythe artery, and that their efferent vessels areradicles of the vena portse within the organ,and join its branches as they are dividing toform the plexus surrounding the tubes ; thuscorresponding with the hepatic origin of thegreat vena portse. In other words, the venaportse is an appendage to the efferent vesselsof the Milpighian bodies, and aids them insupplying blood to the plexus of the in this variety o
Size: 1433px × 1743px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1800, bookdecade1840, bookpublisherlondon, bookyear184
