Human physiology . VIII THE EXCKET10X OF VIMXK 421. the papillae into the calices of the renal sinus. Each tubularorifice with its multiple ramifications represents a pyramid ofFerrein—the morphologi-cal unit from which thepyramids of Malpighi arise. For physiologists thechief interest attaches tothe structure of the differ-ent parts of the uriniferoustubules, and the epithelialcells with which these arelined, in the hope of dis-tinguishing the secretoryportion of the tubules fromsuch parts as simply con-duct the urine. Bowmans capsule,which surrounds the glomerUlUS as the SerOUS Fl(. nl-_stru

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Human physiology . VIII THE EXCKET10X OF VIMXK 421. the papillae into the calices of the renal sinus. Each tubularorifice with its multiple ramifications represents a pyramid ofFerrein—the morphologi-cal unit from which thepyramids of Malpighi arise. For physiologists thechief interest attaches tothe structure of the differ-ent parts of the uriniferoustubules, and the epithelialcells with which these arelined, in the hope of dis-tinguishing the secretoryportion of the tubules fromsuch parts as simply con-duct the urine. Bowmans capsule,which surrounds the glomerUlUS as the SerOUS Fl(. nl-_structure of a Bowmans capsule from cortical coat surrounds the viscera,consists of an externallayer, formed of a struc-tureless basement mem-brane, lined with flattenedepithelium, and an internal or visceral layer which lines the glomeruli, and dips downbetween the loops and the adult its cells donot form a definite and con-tinuous layer (Fig. 111). Inthe foetus, on the contrary(when the vascular loops ofthe glomerulus are still un-devel

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Keywords: ., bookcentury1900, bookdecade1910, booksubjectphysiology, bookyear1