Cavalier King Charles and King Charles Spaniel. The Cavalier King Charles Spaniel is one of the most popular toy breeds. But there are two distinctly different breeds of King Charles Spaniels developed from the ancient Toy Spaniel.
Peristalsis. a wavelike contraction that propels the contents of tubular organs, for example, the intestine, stomach, and ureters, caudally in animals or in a downward direction in man.Peristalsis is the result of many coordinated contractions of the longitudinal and transverse muscles in the walls of a tubular organ.A single peristaltic wave takes the form of a circular constriction around the lumen that moves along the length of the organ.eristalsis is the result of many coordinated contractions of the longitudinal and transverse muscles in the walls of a tubular organ. A single peristaltic wave takes the form of a circular constriction around the lumen that moves along the length of the organ.
Primary peristalsis is a continuation of the peristaltic wave that originates in the pharynx. It extends all the way to the stomach and is sufficiently effective to push the food from the pharynx to the stomach in less than 10 seconds.he esophagus itself is a narrow muscular tube extending from the throat (pharynx) to the stomach. Its main function is to conduct food from the mouth to the stomach.This is done by two types of peristaltic contractions :