ISSN:
1432-136X
Source:
Springer Online Journal Archives 1860-2000
Topics:
Biology
,
Medicine
Notes:
Summary 1. The time courses of the osmotic and ionic concentrations in three different compartments (crop, blood and final urine) of the leech were measured after filling the crop with hypo- or hyperosmotic salt solution. Flow rates of the final urine were followed under the same conditions. 2. Volume regulation is accomplished within several hours but salt excretion takes longer. 3. No correlation was observed between the osmotic and ionic concentrations of blood and final urine. 4. The results indicate that the mechanisms controlling urine volume are independent of those controlling urine concentration. 5. A possible mechanism of fluid absorption from the crop is discussed.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00691022
