The influence of cholinergic and noncholinergic inhibitory nerves was examined in circular and longitudinal muscle from the duodenum. Rodent proximal small intestine was cut into strips measuring 6.0 x 10.0 mm. Strips cut along the oral-caudal axis were called longitudinal strips, whereas those cut 90 degrees to that axis were called circular strips. The… (More)
Since the 1970's scientists, have conducted experiments with bizarre amusement rides to study their effects on the human brain. Appropriating the aesthetics of a television documentary, this short film takes a tongue-in-cheek look at humanity's confused search for solutions.
Blowout at Exit 16A is a vision of our future in which computer-generated elements and photo manipulation combine multiple layers of civilization. Old buildings meet new vehicles, an overdose of traffic, a mood of global warming, and the story of a car breakdown in a pulsating world.
Proximal and distal rat small intestine from 4-, 5- and 6-month-old rats were cut into strips measuring 6.0 X 10.0 mm. Longitudinal strips were cut along the oral-caudal axis of the intestine while circular strips were cut 90 degrees to that axis. The strips were stretched to their optimum lengths and subjected to electrical field stimulation (0.1-1.0 msec… (More)
The influence of myenteric nerves on duodenal muscle contraction and relaxation was examined in vitro and compared with muscle responses from the ileum. Proximal and distal rat small intestine was cut into strips measuring 6.0 X 10.0 mm. Strips cut along the oral-caudal axis were called longitudinal strips, whereas those cut 90 degrees to that axis were… (More)
Opossum duodenum was cut into strips measuring 2.0 X 15.0 mm. Strips cut along the oral-caudal axis were called longitudinal strips, while those cut 90 degrees to that axis were called circular strips. Each strip was placed in a heated, oxygenated organ bath and attached to a force-displacement transducer. Substance P produced tonic contraction in… (More)
The gastrointestinal tract possesses an intrinsic nervous system whose morphology, function, and neuropeptides show many similarities to those of the brain. The central nervous system and the gut's intrinsic nervous plexus are linked together by a network of extrinsic nerve fibers. The majority of these nerve fibers are afferent and relate messages from the… (More)