Biomedical subjects

R Wolfram-Gabel

Publications and source records attributed to R Wolfram-Gabel.

43 records · Page 3Linked to original sources

PubMed1983

[Vascularization of the sub-mucosal and mucosal layers of the colon in man].

The vascularization of the submucosal and mucosal layers of the human colon has been studied in 25 cases whose vascular system was injected with gelatinous indian ink. The submucosal layer presents a true vascular crossroads for the arterial and venous anastomotic networks, which are tributaries of the straight vessels. The morphology of these vascular networks is exactly similar. The straight arteries and veins form vascular rings all along the colon, and they anastomose by means of longitudinal and transverse vessels. Many vessels of the muscular and all those of the mucosal layer are tributaries of these vascular networks. The vessels of the mucosal layer include the precapillary arteries, capillary network of the intestinal glands and postcapillary veins. The latter joint and form the mucosal venous trunks, which, in turn, form the mucosal veins, which flow into the submucosal venous network.

Arteriovenous Anastomosis↗

PubMed1982

[The vascular networks of the subserous layer of the human colon].

The subserous layer of the colon has, like the small intestine, a rich vascular network. The subserous arteries arise from the straight arteries and are directed towards the taeniae, the surface and free margin of the colon. They terminate at various levels and, by their collateral and terminal branches, form an anastomotic network of vessels whose morphology varies at the level of surface, taenia and the free margin of the colon. From this subserous arterial network arise branches destined to vascularise the muscularis, the fat of the colon and the greater omentum. The subserous venous network copies closely the morphology of the arterial network and is connected by large perforating veins to the submucous venous network.

Adipose Tissue↗

PubMed1982

[The vascular network of the subserous layer of the colon in man].

Adipose Tissue↗

PubMed1981

[Vascularization of the submucosal and mucosal membranes of the 1st and 2d portions of the duodenum in the adult].

The vascularization of the mucosal and submucosal layers of the first and second duodenal segments of adult man is studied in 12 duodenums, in which the vascular system has been injected with gelatinous india ink. The submucosal layer of the duodenum constitutes a true vascular crossroad of two anastomotic networks, one arterial, the other venous, which morphology is completely superimposable. It differs from the jejunum and the ileum because the existence of the Brünner's glands in the submucosa which are vascularized by an important and characteristic capillary network. The arteries of the mucosa are tributary of the submucosal network. They leave precapillary arterioles which reach the Lieberkühn's glands, the Brünner's gland of the mucosa and the duodenal villi. There, they give rise in three capillary networks which are anastomosed at the base of the villi and within the lamina propria. The venous drainage of the mucosa flows into the submucosal venous network.

Adult↗

PubMed1980

[Systematization of the angioarchietectomy of the jejunum and the ileum in man around the perinatal period (author's transl)].

The vascularization of the different layers of the jejunum and the ileum was studied in 35 human intestins between the 23d foetal week and the first postnatal year. The vascular systems in all 35 cases were injected with gelatinous inda ink. During the perinatal period the submucosal layer is a true vascular crossroad formed by an intricate plexus of blood vessels, both arterial and venous, similar in structure and whose density increases with the development of the intestinal wall. The vascularization of the muscularis, essentially a tributary of the submucosal layer, is assured by long and short muscular arteries whose structure and number vary with age. The venous system of the muscularis is a satellite of the arterial system. The arteries of the serosa originate essentially from straight arteries and accessorily from the intervascular mesenteric arches. Their terminal and collateral branches form an anastomotic network caracteristic of the perinatal period. Drainage is assumed by veins of the serosa, which are tributaries of straight veins, and similar to the arteries, undergo progressive densification parallel with development. The arteries of the mucosa are tributaries of the submucosal network and abandon precapillary arterioles and two capillary networks: one surrounds the Lieberkühn glands, the other is destined for the intestinal villus. These dense networks and the vascular networks of the other layers help preserve the intstinal villus and glands during development. Finally, the venous drainage of the mucosa flows into the submucosal venous network.

Female↗

PubMedDate not supplied

[Vascular networks of the periphery of the finger nail].

The vascular networks of the periphery of the nail of the finger are studied on fingers of adults, fetus and newborns, by injecting the vascular system with gelatinous Indian ink. The nail is an avascular horny structure, partially covered with the nail fold. It is lying on a nail bed which prolonges forwards with the hyponychium. Each part of the nail apparatus (nail fold, matricial and unmatricial parts of the nail bed, hyponychium) presents a characteristic network which is tributary of dorsal collaterals arising from the digital palmar vessels and from their arcades. These networks are papillar, pseudopapillar, reticular and subdermical. The morphology and density of these networks vary according to their localisation and are superimposed with the histological variations of the different parts of the nail apparatus. Thus the matricial part of the nail bed shows a poor vascularization. It corresponds to the germinative part of the nail and is responsible of the color of the lunula. The unmatricial part of the nail bed and the hyponychium have dense vascular networks with glomi.

Adult↗

PubMedDate not supplied

[Venous vascularization of the lentiform nucleus].

The venous vascularization of the nucleus lentiformis in man is studied in 30 brains by injecting the vascular system with gelatinous Indian ink. The venous vascularization of the nucleus lentiformis is drained towards the deep venous system of the brain by two ways, one ascending, the other descending. The first one is formed by superior lenticular veins which drain into the thalamo-striate vein, principal tributary of the internal cerebral vein. The second one is formed by inferior lenticular veins which depend from the deep middle cerebral vein, another tributary of the internal cerebral vein. The veins of the nucleus lentiformis, especially the veins of the putamen, present many similarities with these one of the cerebral cortex. They form the center of venous units surrounded by an arterial ring formed by the branches of ramification of the central arteries. The principal vein of the unit is surrounded by a capillary-free space. This similarities may be explained by the common origin of the cerebral cortex and of the putamen, both belong to the neocortical system.

Adult↗