The presence of muscular tissue in the alimentary canal indicates that some sort of movements must be present in the gastro-intestinal tract. As a matter of fact, the alimentary canal does move, its different parts showing different kinds of movements. Reason for Movement: If one recollects the chief functions of the digestive tract, such as digestion, secretion, absorption, defecation etc., [...]
In this article we will discuss about the interactions and metabolic effects of gastro-intestinal hormones. Interactions of Gastro-Intestinal Hormones: As gastrin stimulates acid secretion, it probably combines with specific receptor sites on the effector cells. When the concentration of gastrin is high, many receptor sites are occupied and when this concentration is low, few receptor sites are occupied. This relationship [...]
In this article we will discuss about the four main types of movements that are seen in stomach. Type # 1. Movements of the Fundus and Body: A peristaltic wave follows the basic electrical rhythm (B.E.R.) of stomach. It starts in the longitudinal musÂcle of greater curvature as a pacemaker and passes over the body, antrum and pylorus at a [...]