Some Factors Controlling Ureteral Peristalsis

The ureteral lumen during peristalsis.

This study concerns the size and shape of the ureteral lumen and an assessment of its enlargement during peristalsis. To stop the action of the living dog ureter, it was flooded with isopentane close to its freezing point (160°C). The ureter remained frozen until completion of all technical procedures. Photographs of the cut end of active ureters also provided evidence of its luminal characteri...

Myogenic and neurogenic factors in the control of pyeloureteral motility and ureteral peristalsis.

Goat ureter - an alternative model for measuring ureteral peristalsis.

An alternative model for the measurement of ureteral peristalsis is described using the goat ureter. Ureters from freshly slaughtered goats (Capra aegagous hircus) were collected from a local slaughter house. The peristaltic reflex of these preparations was recorded using a specially designed apparatus. The preparations were mounted so that contractile responses to drugs could be recorded isome...

Effects of Noradrenaline Acetylcholine on Ureteral and Peristalsis

MORITA, T., SuzuKI, T., KoNDO, S. and TSUCHIDA, S. Effects of Noradrena line and Acetylcholine on Ureteral Peristalsis. Tohoku J. exp. Med., 1983, 141 (4), 489-490 Experiments in vitro were performed to compare effects of noradrenaline and acetylcholine on the pyeloureter, both of which activate ureteral peristalsis. Noradrenaline elevated the baseline renal pressure to accelerate the ureteral ...

Some factors controlling food intake by zinc-deficient rats.

I . Male hooded Lister rats given a diet containing 40 mg zinc/kg were described as Znadequate. Other rats were subsequently given diets containing less than I m g Zn/kg. After a period of approximately 5 d these animals ceased to grow and were described as Zn-deficient. 2. Zn-deficient rats offered ad lib. a Zn-deficient diet containing 200 g egg albumenjkg ate only 55 "/o of the weight eaten ...