This study concerns the size and shape of the ureteral lumen and an assessment of its enlargement during peristalsis. To stop the action of the living dog ureter, it was flooded with isopentane close to its freezing point (160°C). The ureter remained frozen until completion of all technical procedures. Photographs of the cut end of active ureters also provided evidence of its luminal characteri...

Introduction. Intestinal obstruction in the setting of Meckel's diverticulum in young age and with orange and meat bezoar is a rare, previously unreported condition. Since the obstruction point is located immediately after Meckel's diverticulum in our patients, we attempt to introduce "localized peristalsis insufficiency" as a new etiology for small intestine obstruction while reviewing the fin...

Esophageal motility disturbances are common in diabetics in general and are most prevalent in these with peripheral neuropathy or autonomic neuropathy. The usual findings are a decrease in the amplitude of esophageal contractions in the smooth muscle portion of the body, frequent absence of primary peristalsis, simultaneous or repetitive body contractions, and a decrease in the velocity of peri...

megacystis microcolon intestinal hypoperistalsis syndrome (mmihs) is a rare and the most severe form of functional intestinal obstruction in the newborn. the characteristic features of this congenital and fatal disease are abdominal distension, absent or decreased bowel peristalsis. abdominal distension is a consequence of the distended, unobstructed urinary bladder with or without hydronephros...

chronic inflammatory demyelinating polyneuroradiculopathy (cidp) is an immune mediated disorder characterized by progressive developing or relapsing symmetrical motor or sensory symptoms in more than one limb over a period of two months. achalasia, as a primary esophageal motility disorder, is also characterized by increasing the tone of lower esophageal sphincter, absence or incomplete sphinct...

A SOLID object introduced into the intestine induces powerful contractions of the circular muscles which transport the object in an aboral direction. This response has been known for a long time (I-S). In the present paper it will be described in greater detail on the basis of visual observations and records of action potentials. In a subsequent paper the underlying neuromuscular mechanism will...