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Excretory pathways of ammonia and urea in the earthwormLumbricus terrestris L.

✍ 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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✦ Synopsis


the gut, while urea is voided via the nephridia. discussed.

  1. The earthworm Lumbrkus terrestris voids ammonia principally via 2. The possible significance of these separate pathways for nitrogenous wastes is

πŸ“œ SIMILAR VOLUMES


Studies on the transition to ureotelism
✍ Tillinghast, Edward K. ;Janson, Colette H. πŸ“‚ Article πŸ“… 1971 πŸ› John Wiley and Sons 🌐 English βš– 396 KB

## 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

Water economy of the earthwormLumbricus
✍ Carley, Wayne W. πŸ“‚ Article πŸ“… 1978 πŸ› John Wiley and Sons 🌐 English βš– 483 KB

## Abstract Although it displays many characteristics of a freshwater ani‐mal, 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 70–80% relative humid

Metabolic sources of ammonia in the eart
✍ MacDonnell, Paul C. ;Tillinghast, Edward K. πŸ“‚ Article πŸ“… 1973 πŸ› John Wiley and Sons 🌐 English βš– 530 KB

## 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, L‐serine dehydratase and 5′‐AMP deaminase, have been observed to be present in

The distribution of ammonia-generating e
✍ Tillinghast, Edward K. ;MacDonnell, Paul C. πŸ“‚ Article πŸ“… 1973 πŸ› John Wiley and Sons 🌐 English βš– 347 KB

## Abstract The linear distribution of ammonia‐generating enzymes (L‐serine dehydratase and 5′‐AMP 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 in evaluation of the
✍ Demetrius H. Bagley; William F. Sindelar; Edward L. Felix; John L. Doppman; Alfr πŸ“‚ Article πŸ“… 1978 πŸ› John Wiley and Sons 🌐 English βš– 375 KB

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