Blood Flow in the Renal Glomerulus

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Abstract
For the transillumination of the kidney, an American Optical "universal" lamp was used. The frogs were anesthetized with a mixture of 5% trichlor-isopropyl alcohol, plus 20% ethyl alcohol, plus 75% distilled water (0.3 cc for a medium sized frog). Great variations in the patterns of blood flow were found. During slow blood flow, the number of active blood channels is low. These few channels are wide and constant in their position. During rapid blood flow, the blood channels are numerous, and most of them are narrow. They shift their positions continuously so that every part of the lamina vasculosa glomeruli is traversed by blood frequently.