. Chordate anatomy. Chordata; Anatomy, Comparative. PROXIMAL CONVOLUTED TUBULE. DISTAL CONVOLUTED TUBULE.^ ARCUATE ARTERY- ARCUATE VEIN COLLECTING TUBULE PAPILLARY DUCT'. EXCRETORY TUBULE CALYX-Y- B. I Fig. 271.—A diagram of the finer structure of a kidney. A is a section of the entire kidney showing the contrast between cortical and medullary fegions. The relations of the chief arteries and veins are indicated. B is a reconstruction of a single tubule, showing its relations to the blood and the pelvis of the kidney. (Reproduced in modi- fied form from "The Human Body " by Dr. Logan
. Chordate anatomy. Chordata; Anatomy, Comparative. PROXIMAL CONVOLUTED TUBULE. DISTAL CONVOLUTED TUBULE.^ ARCUATE ARTERY- ARCUATE VEIN COLLECTING TUBULE PAPILLARY DUCT'. EXCRETORY TUBULE CALYX-Y- B. I Fig. 271.—A diagram of the finer structure of a kidney. A is a section of the entire kidney showing the contrast between cortical and medullary fegions. The relations of the chief arteries and veins are indicated. B is a reconstruction of a single tubule, showing its relations to the blood and the pelvis of the kidney. (Reproduced in modi- fied form from "The Human Body " by Dr. Logan Clendening, (Copyright 1927, 1930 by Alfred A. Knopf, Inc.) by permission of and special arrangement with Alfred A. Knopf, Inc., authorized publishers.) and is known as the proximal convoluted part of the tubule. Passing into one of the pyramids, the tubule becomes slender and straight and is known as the descending limb of Henle's loop. Bending sharply, it forms the ascending limb of Henle's loop, and returns to the cortex, where it becomes convoluted again, the distal convoluted portion, and unites with a collecting tubule. As an element in a cortical ray, each collecting tubule passes from the cortex into a pyramid. Usually a group of col- lecting tubules unite and open by a common aperture into the pelvis of the ureter. There is evidence that the secretion of urine takes place chiefly in the renal corpuscles and in the convoluted portions of the tubules, while the limbs of Henle's loop are chiefly absorptive in function. The high degree of concentration of the constituents of urine leads physi-. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Neal, Herbert V. (Herbert Vincent), 1869-1940; Rand, Herbert W. (Herbert Wilbur), 1872-1960. Philadelphia : P. Blakiston's Son & Co.
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Keywords: ., bookcentury1900, bookpublisherphi, booksubjectanatomycomparative
