## Abstract The hypothesis that anatomically distinct endocrine centers control the production of urea and ammonia in the earthworm has been examined. This hypothesis is not supported by the present data. Ammonia output is markedly increased by a high protein diet, while the urea output is reduce
Excretory pathways of ammonia and urea in the earthwormLumbricus terrestris L.
β Scribed by Tillinghast, Edward K.
- Publisher
- John Wiley and Sons
- Year
- 1967
- Tongue
- English
- Weight
- 556 KB
- Volume
- 166
- Category
- Article
- ISSN
- 0022-104X
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β¦ Synopsis
the gut, while urea is voided via the nephridia. discussed.
- The earthworm Lumbrkus terrestris voids ammonia principally via 2. The possible significance of these separate pathways for nitrogenous wastes is
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## Abstract Although it displays many characteristics of a freshwater aniβmal, the earthworm __Lumbricus terrestris__ survives well in moist terrestrial environments. Earthworms in soil are only partially hydrated and gain weight when transferred to pond water. Worms in air of 70β80% relative humid
## Abstract The earthworm __Lumbricus terrestris__ is ammonotelic while feeding but becomes ureotelic with fasting. The metabolic sources of ammonia nitrogen in feeding worms have been examined. Two deaminating enzymes, Lβserine dehydratase and 5β²βAMP deaminase, have been observed to be present in
## Abstract The linear distribution of ammoniaβgenerating enzymes (Lβserine dehydratase and 5β²βAMP deaminase) along the gut of __Lumbricus__ has been examined using that of the digestive enzymes as a frame of reference. This study confirms the observations of earlier workers indicating a high acti
Excretory urography was performed routinely in 504 patients with sarcoma, melanoma, pelvic, head and neck, or other localized tumors over a 5-year period. There were benign abnormalities in 14.4% of the patients examined, tumor associated abnormalities in 10.7%, and 1.4% false positives. The diagnos