Carpenter's principles of human physiology . Distribution of Capillaries, in Muscle. Capillary network around Fat-cells. 247. The average rate of movement of the blood through the Capillarysystem may be determined with tolerable precision by microscopic measure-ment ; and the observations of Hales, Valentin, and Weber concur in repre-senting it to average in the systemic capillaries of the Frog 1-2 inch perminute.* In warm-blooded animals, however, the capillary circulation isprobably much more rapid than this ; the observations of Volkmann upon themesenteric arteries of the Dog making its rat
Carpenter's principles of human physiology . Distribution of Capillaries, in Muscle. Capillary network around Fat-cells. 247. The average rate of movement of the blood through the Capillarysystem may be determined with tolerable precision by microscopic measure-ment ; and the observations of Hales, Valentin, and Weber concur in repre-senting it to average in the systemic capillaries of the Frog 1-2 inch perminute.* In warm-blooded animals, however, the capillary circulation isprobably much more rapid than this ; the observations of Volkmann upon themesenteric arteries of the Dog making its rate about 1*8 inch per minute;whilst Ludwig and Vierordt, from observations on the movement of the blood-corpuscles in the retinal capillaries of their own eyes, estimate the rapidity atfrom one inch in 41 seconds to one inch in 28 seconds. The layer Avhich isin immediate proximity to the wall of the vessels flows from 9 to 17 timesmore slowly if the movement of the white corpuscles is to be taken as a meansof estimating it (Weber). Assuming
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectphysiology, bookyear1
