The nature of the movements of the omentum

Florey, H. W.; Carleton, H. M.

doi:10.1002/path.1700290111

Cited by 19 publications

(7 citation statements)

References 2 publications

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“…This notion has persisted despite the experiments of Florey and others, which suggest that the omentum only moves passively because bowel peristalsis and positional changes by the individual. 4 Pathology originating in the greater omentum is uncommon and has few causes.…”

Section: Discussionmentioning

confidence: 99%

Modern Management of Omental Torsion and Omental Infarction: A Surgeon's Perspective

Itenberg

Mariadason

Khersonsky

et al. 2010

Journal of Surgical Education

122

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Section: Discussionmentioning

confidence: 99%

Modern Management of Omental Torsion and Omental Infarction: A Surgeon's Perspective

Itenberg

Mariadason

Khersonsky

et al. 2010

Journal of Surgical Education

122

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“…In this there were no rhythmic movements. The second involved the insertion of an abdominal window by a method described elsewhere (3). A loop of gut was sutured round the cut edge of the muscle so that a layer of mesentery was spread beneath the window, being forced into apposition with the celluloid by pressure of the in-4 testines behind.…”

mentioning

confidence: 99%

“…In Exp. 3 evidence was obtained that slight pressure, such as from a finger lightly applied, was capable of causing a great increase in the number of cells expelled. In Exp.…”

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confidence: 99%

Observations on the contractility of lacteals

Florey¹

1927

The Journal of Physiology

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THE appearances presented by the lacteals on microscopic examination of the mesentery in the guinea-pig and rat have been described in a. previous communication(i). The rhythmical activities of these vessels have been examined, from the point of view of their initiation and control, both by means of nerve stimulation and drug action. The appearances and reactions presented by the lacteals and lymph glands of other species are also described.It was possible with the microdissection apparatus to inject minute quantities of a drug close to the lacteal under observation, so that the effects of such an application could be seen on a circumscribed portion of the lacteal. The pipette was first filled with the drug and the mesentery spread above the hollow chamber. By suitable manipulation the drug was then injected and the results watched. The drugs chosen were pilocarpine and adrenalin, as it was possible that the reactions obtained with them would give some indication of nervous influences on the rhythm. Pituitrin was also used.In the rat, the injection of a small quantity of 1/100,000 adrenalin was followed by a vigorous contractile spasm in portions just near the injection and a much increased rate of contraction in portions a little further away. The rate of contraction rose from once in 5 or 6 seconds to twice per second on occasion. It must be admitted, however, that the reactions presented by these vessels were liable to be capricious, as also is the case in the cat, which will be described later. This effect on the rhythm could not be produced in all experiments but, in that it occurred quite frequently, it must be accepted as significant. The negative results may be attributable to some unknown factor, inflammation possibly, as it is known that blood vessels in a state of inflammation do not react by contraction to adrenalin. In these preparations the blood vessels reacted invariably, but the lacteals seem to be possessed of a more delicate contractile mechanism.PH. LXIII.

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“…Also, the large variety in pore diameter at 12 months suggested that the meshwork might have become detached, resulting in joining and subsequent enlargement of pores. The greater omentum itself is not mobile in nature, and it is derived that greater omentum was extended by the vector construction caused by changes in abdominal pressure from intestinal motility and contraction/extension of the diaphragm, as well as the circulation of blood in the greater omentum (Florey and Carleton, ). The SEM image of the greater omentum in neonate cats showed microvilli of varying length growing on the surface of the mesothelium; however, it was suggested that the length of these microvilli decreased with age.…”

Section: Discussionmentioning

confidence: 99%

Scanning Electron Microscopic Study for Pore Formation of the Greater Omentum of Cats

Owaki

Oono²,

Nakajima

et al. 2012

Anat Histol Embryol

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The greater omentum of the cats is said to have a lace-like structure. However, there are only a few descriptions on whether pores exist, and there are not many morphological studies on this meshwork. In this study, the greater omentum of the cats was observed at each age of development using a scanning electron microscope. The greater omentum of the cats immediately after birth was found to be continuous, and no pores were observed. Also, development of microvilli was observed in the mesothelial cells on the surface of the greater omentum. In young cats at 3 months of age, small pores were sporadically observed, and at the ages of 6-12 months, there were more and larger pores. It was estimated that the pores on the greater omentum are formed in the process of moving from the movement of organs, such as the stomach, intestines and diaphragm, and the presence of these pores enables the passage of ascites between the omental bursa, the greater omentum and the serosal cavity of the wall without flowing through the omental foramen.

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The nature of the movements of the omentum

Cited by 19 publications

References 2 publications

Modern Management of Omental Torsion and Omental Infarction: A Surgeon's Perspective

Modern Management of Omental Torsion and Omental Infarction: A Surgeon's Perspective

Observations on the contractility of lacteals

Scanning Electron Microscopic Study for Pore Formation of the Greater Omentum of Cats

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