Segmentation contractions (or movements) are a type of intestinal motility.
Unlike peristalsis, which predominates in the esophagus, segmentation contractions occur in the large intestine and small intestine, while predominating in the latter. While peristalsis involves one-way motion in the caudal direction, segmentation contractions move chyme in both directions, which allows greater mixing with the secretions of the intestines. Segmentation involves contractions of the circular muscles in the digestive tract, while peristalsis involves rhythmic contractions of the longitudinal muscles in the gastrointestinal tract. Unlike peristalsis, segmentation actually can slow progression of chyme through the system.
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Segmentationcontractions (or movements) are a type of intestinal motility. Unlike peristalsis, which predominates in the esophagus, segmentation contractions...
dysfunctional and involves irregular, diffuse, simultaneous contractions. These contractions are suspect in esophageal dysmotility and present on a barium...
Segmentation contractions are the contractions in intestines carried out by the smooth muscle walls. Unlike peristalsis, which involves the contraction and relaxation...
stomach. The other type of contractions, called phasic contractions, consist of brief periods of both relaxation and contraction, occurring in the posterior...
mouth through mastication and in the small intestine through segmentationcontractions. In chemical digestion, enzymes break down food into the small...
throughout the gastrointestinal tract, including peristalsis, and segmentationcontractions. Gastric activity involved in digestion is divided into three...
the presence of certain drugs including alcohol, or powerful muscular contractions and duodenal spasms. This is known as biliary reflux. Biliary obstruction...
mastication, the tongue, and the teeth, and also by the contractions of peristalsis, and segmentation. Gastric acid, and the production of mucus in the stomach...
expansion/contraction, facility expansion, purchases of capital equipment, promotional activities, and many other aspects of a company. Market segmentation is...
twitch fibers produce 10 to 30 contractions per second (10 to 30 Hz). Fast twitch fibers produce 30 to 70 contractions per second (30 to 70 Hz). The vibration...
absent in others, and Echiura and Sipuncula show no obvious signs of segmentation. In species with well-developed septa, the blood circulates entirely...
Cardiac and smooth muscle contractions are stimulated by internal pacemaker cells which regularly contract, and propagate contractions to other muscle cells...
ion entry and contraction. Slow waves organize gut contractions into phasic contractions that are the basis for peristalsis and segmentation.[medical citation...
marketing strategy of a business, and is a process of market segmentation. Market segmentation can be defined as the division of a market into its select...
fragments that are unidentified by current image segmentation algorithms and require additional manual segmentation to measure. Betz cell Central chromatolysis...
bodies divided into segments, but echiurans have secondarily lost their segmentation. The majority of echiurans live in burrows in soft sediment in shallow...
types of intestinal motility – peristalsis and segmentation. This motility is brought about by the contraction of smooth muscles in the gastrointestinal tract...
branding strategy, a new positioning strategy, a new segmentation strategy, line extensions and contractions, problems with previous positions, insights from...
straightforward. However, even here there are many edge cases such as contractions, hyphenated words, emoticons, and larger constructs such as URIs (which...
in computer networks. Image registration and segmentation – see minimum spanning tree-based segmentation. Curvilinear feature extraction in computer vision...
and other functions. Hemolymph pressure may be increased by muscle contractions or by swallowing air into the digestive system to aid in molting. Many...
anatomy to perform specific tasks. Built on feature recognition and segmentation algorithms, this technology can provide patient-specific three-dimensional...
segmented tube-within-a-tube body plan with corresponding internal segmentations, and usually have setae on all segments. They have a cosmopolitan distribution...
useful information, for example, tracking the blood flow, or the speed of contractions and expansions. With 3D echocardiography, physicians can detect artery...
may have been a defense against predators. Wiwaxia apparently moved by contractions of a slug-like foot on its underside. In one specimen a small brachiopod...
pressure gives the body a supportive framework that acts as a skeleton. no segmentation body wall epidermis and muscle often syncytial usually covered by a secreted...