. The cyclopædia of anatomy and physiology. Anatomy; Physiology; Zoology. REN. 241 empty, they cannot be distinguished from the fibrous tissue in which they are imbedded; it Fig. Section of the kidney, showing the relation of the tubes and blood-vessels to the fibrous matrix. «, portion of a tube; b, section of a blood-vessel; c, fibrous matrix. Magnified 100 diameters: from a specimen prepared by Mr. Bowman. is only by the contrast of their colour when filled with blood, or with injection, that it can be ascertained that, in addition to the capil- lary vessels which surround the tubes,
. The cyclopædia of anatomy and physiology. Anatomy; Physiology; Zoology. REN. 241 empty, they cannot be distinguished from the fibrous tissue in which they are imbedded; it Fig. Section of the kidney, showing the relation of the tubes and blood-vessels to the fibrous matrix. «, portion of a tube; b, section of a blood-vessel; c, fibrous matrix. Magnified 100 diameters: from a specimen prepared by Mr. Bowman. is only by the contrast of their colour when filled with blood, or with injection, that it can be ascertained that, in addition to the capil- lary vessels which surround the tubes, there is a connecting fibrous tissue, the office of which appears to be to support and retain in position the various complicated parts — tubes, Malpighian bodies, and blood-vessels — amongst which it is placed.* Tubuli Uriniferi. — The tubuli uriniferi are so intimately connected with the Malpighian bodies, that it is not possible to give a com- plete description of one of these structures without an occasional reference to the other. The general course and mode of division of the tubes, as well as their connexion with the Malpighian bodies, is best ascertained by the examination of specimens in which the * Mr. Toynbee, in a paper " On the Minute Structure of the Human Kidney," i alludes to the presence of " parenchymal cells " in the kidney, to which he assigns an important function in preparing the blood for further changes in the tubuli, in which he says " cells of a character not very dissi- milar are ; He considers that "the relation in which the parenchymal cells stand to the ner- vous S3rstem is a subject of great interest;" and he arrives at the conclusion that the nervous filaments " end \)j becoming continuous with the parenchyma of the organ precisely as he has observed those in the tail of the tadpole to become directly continuous with the radiating fibres of stellated corpuscles, and the filaments from the
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