For these mineral growths are not mere crystallizations as many suppose; they increase by intussusception and not by accretion.
By intussusception is meant an invagination or protrusion of a part of the intestine in the lumen of the intestine immediately below it; the lower part of the intestine may be said to have swallowed that immediately above it.
Intussusception may be acute or chronic, sometimes lasting intermittently for years.
Diagram to show how an Intussusception takes place.
The cause of intussusceptionis said to be violent peristaltic action, however produced.
The symptoms are the same as those ofintussusception and obstructions of the bowels; the same directions as to treatment are therefore to be observed.
Mayhew Michener has operated successfully on a foal with intussusception by opening the abdomen and releasing the imprisoned gut.
Whilst the growth of the malacoma is dependent on intussusception (as in most organic structures capable of imbibing), the growth of the skeleton in all Radiolaria takes place by apposition (see note B).
Brandt concluded, from the varying size of the median bars in the twin-spicules of Sphaerozoum, that these siliceous structures grow by intussusception (L.
Enterotomy is less dangerous than laparotomy, as by it there is less interference with the peritoneum; but no relief could be afforded by this procedure in cases of intussusception or acute obstruction from bands, hernia, or volvulus.
The most common variety of intussusception is the ileo-caecal.
In intussusception not relieved by medical means the propriety of abdominal section is questionable.
Leichtenstern believes that the paretic portion is turned in and invaginated into the normal bowel below, and that the clinical course of intussusception and post-mortem appearance correspond with this explanation.
It has been suggested that this slight and temporary intussusception may occur during life and give rise to temporary symptoms of intestinal obstruction, which disappear when reduction of the displacement spontaneously takes place.
While intussusception may occur in either sex and at all periods of life, it happens nearly twice as often in males as in females, and is most frequently seen in childhood.
The symptoms of intussusception generally come on suddenly, and indicate both intestinal obstruction and inflammation.
In occlusion from stricture, compression, fecal impaction, and chronic intussusception the patient may live for weeks or even months.
The mechanism of intussusception is probably not always the same.
Intussusception may occur in any portion of the intestinal canal, but some points are more liable to it than others.
Hence the compounds present in the organic substratum and capable of forming albumen enter preferably into the masses of plasma, and by intussusception of micellae of albumen, cause growth.
Life presupposes the intussusceptionof plasma-micellae; hence it ceases as soon as the arrangement of micellae is so far disordered by injurious influences that that process of growth becomes impossible.
In constriction and intussusception of the intestines, and when relaxing clysters are indicated, they should not be too long persevered in, for falling of the rectum has been known, in many instances, to arise from repeated injections.
A simple aperient of linseed oil may be given in cases of stricture or intussusception of the bowels.
The more common and older meaning of assimilation in animal physiology is, in the widest sense, the intussusception and preparation of the food received.
In the first place, crystals grow by the external apposition of fresh matter, while cells grow by the intussusception of fresh particles within the plasm (cf.
The above list will hopefully give you a few useful examples demonstrating the appropriate usage of "intussusception" in a variety of sentences. We hope that you will now be able to make sentences using this word. Other words: introversion; retroflexion; reversal; reversion; revulsion; transposition
