... and muscle arrangement were examined in juveniles and adults of the small polychaete Capitella sp. We found that it moves by peristalsis, and no obvious differences were observed among worms of different sizes; even very small juveniles were able to burrow through a clear mud analog by fracture...

... Gastrointestinal Migrating motor complexes Ripples Peristalsis Propagating Standing contractions Fasting Fed Spatio-temporal maps TTX Fish Teleost Maintenance and operation of the gastrointestinal tract are essential for all animals to store, process and assimilate food, as well as providing...

... for correspondence ( [email protected] ) 25 9 2010 © 2010. 2010 sediment mechanics burrowing biomechanics fracture locomotion peristalsis hydrostatic skeleton gelatin Cirratulidae Cirriformia moorei Marine burrowers move through muddy sediments by extending crack-shaped...

... biomechanics Cirratulidae Cirriformia moorei gelatin fracture locomotion peristalsis ontogenetic scaling hydrostatic skeleton Muddy marine sediments are elastic solids through which burrowers move by extending crack-shaped burrows ( Dorgan et al., 2005 ). Through burrowing and feeding...

... to the origin of nerves and true muscle. * Author for correspondence (e-mail: [email protected] ) 16 7 2007 © The Company of Biologists Limited 2007 2007 Ephydatia muelleri peristalsis evolution of conduction Porifera propagated contraction Sponges (phylum Porifera) have...

... functions similarly in alligators and humans. For both, boli of water in the esophagus stimulate peristalsis and relaxation of the sphincter simultaneously. After a short period, the sphincter regains its tone, and pressure rises to levels equal to or greater than those observed before boli delivery...

... basal animals with a nervous system, we investigated the role of NO in peristalsis, an activity that moves body fluids through the coelenteron (gastrovascular cavity) of the polyps across the colony. NO donors increased the amplitude of peristaltic contractions and increased tonic contractions...

... allatostatin allatotropin anterior stomach head peptide larva midgut mosquito neuropeptide F peristalsis proctolin transepithelial voltage In addition to its conventional roles in food digestion and nutrient absorption, the stomach of mosquito larvae is of critical importance for ionic...

... hydrostatic skeleton earthworm ontogeny locomotion peristalsis Lumbricus terrestris The size of an animal is generally considered to be an important determinant of its locomotory behavior. For example, larger animals tend to have slower stride frequencies, wingbeat frequencies and tailbeat...