spiral valve


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spiral valve

The American Heritage® Medical Dictionary Copyright © 2007, 2004 by Houghton Mifflin Company. Published by Houghton Mifflin Company. All rights reserved.
References in periodicals archive ?
Led by ValentAaAaAeA n Sans-Coma, a zoologist the University of Malaga, the researchers wrote: "There were two hearts, two oesophaguses, two stomachs, two livers, but a single intestine with a spiral valve."
The weight and volume of stomach and spiral valve content, when present, was relatively small with little to no soft tissue of prey items remaining.
Spiral valves were sampled with stomachs to insure there were no prey items missed, especially hard prey items that are frequently retained longer within the ray digestive system.
Spiral valve, Carcharhinus leucas (F), Barra del Colorado, Rio Colorado, Limon (Watson and Thorson 1976).
Spiral valve, Urotrygon chilensis (F), Costa de Pajaros, Puntarenas (Marques et al.
However, Sullair believe that their spiral valve system can offer a more energy efficient and cost effective solution than that provided by most inverter drive systems.
The spiral valve from Sullair operates at maximum efficiency with loads between 40-100%.
The fish also has a long spiral valve in its intestine, which slows the passage of food and enables it to be more completely digested.
He proposed that enterospirae are related to the spiral valves of modern sharks and rays, and, as such, are attributed to fossil taxa in this group.