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  • 1
    Electronic Resource
    Electronic Resource
    The membranous part of the human interventricular cardiac septum (1998)
    Springer
    Surgical and radiologic anatomy 20 (1998), S. 13-21 
    Details
    ISSN: 1279-8517
    Keywords: Heart ; Interventricular septum ; Collagen-elastic fibers arrangement ; Functional anatomy
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract The arrangement of collagen and elastic fibers of the membranous part of the interventricular septum (PMS) was studied in hearts from adult humans. Connective bundles formed a network of fairly independent tendons arranged in two layers. The tendinous bundles consisted essentially of type I collagen fibers while type III fibers were visible as a thin network with transversely and longitudinally oriented meshes around the muscle bundles. Cranial and caudal to the PMS were narrow and irregular bands of collagen fibers that apparently represented zones of low resistance to the high blood pressures acting from the left to the right heart chambers. The predominance of fiber bundles arranged in an approximately transverse direction with regard to the arterial cone axis suggests a resistance to enlargement resulting from high aortic blood pressure. Elastic fibers were observed in the transitional zone between the cardiac muscle and the PMS. They were continuous with elaunin fibers and these with oxytalan fibers closely intermingled with the narrow network of type I collagen fibers of the PMS. The successive transformation of elastic fibers, which were very numerous in the muscle-tendon transition, into elaunin and these into oxytalan fibers toward the central portions of the PMS suggests a functional sequence characterized by a high elasticity and consequent mobility of the transition region itself and by a progressive increase of resistance in this portion.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s00276-998-0013-6
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  • 2
    Electronic Resource
    Electronic Resource
    The membranous part of the human interventricular cardiac septum (1998)
    Springer
    Surgical and radiologic anatomy 20 (1998), S. 13-21 
    Details
    ISSN: 1279-8517
    Keywords: Heart ; Interventricular septum ; Collagen-elastic fibers arrangement ; Functional anatomy
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Résumé La disposition du collagène et des fibres élastiques de la partie membraneuse du septum interventriculaire (PMS) a été étudiée sur le coeur d' adultes humains. Des faisceaux conjonctifs forment un réseau de tendons indépendants disposés en deux couches. Les faisceaux tendineux sont constitués essentiellement par des fibres collagènes de type I tandis que des fibres de type III réalisent un réseau à fines mailles transversales et longitudinales autour des fibres musculaires. Crânialement et caudalement à la PMS se situent des bandes étroites et irrégulières de fibres de collagène qui semblent représenter des zones de moindre résistance aux hautes pressions sanguines que les cavités cardiaques gauches exercent sur les cavités droites. La prédominance de fibres disposées en faisceaux perpendiculaires à l'axe du cône artériel fait penser qu'elles ont pour rôle de s'opposer aux hautes pressions artérielles aortiques. Des fibres élastiques ont été observées dans une zone de transition entre le myocarde et la PMS : elles étaient en continuité avec des fibres d'élaunine, ces dernières se prolongeant par des fibres d'oxytalane intimement intriquées avec l'étroit réseau de fibres collagènes de type I de la PMS. Ces transformations successives des fibres élastiques, qui apparaissent très nombreuses au niveau de la transition musculo-tendineuse, en fibres d'élaunine puis en fibres d'oxytalane vers la partie centrale de la PMS suggèrent l'existence d'une séquence fonctionnelle caractérisée par un haut degré d'élasticité, et par conséquent de mobilité, de cette région de transition et par une augmentation progressive de sa résistance à ce niveau.
    Notes: Summary The arrangement of collagen and elastic fibers of the membranous part of the interventricular septum (PMS) was studied in hearts from adult humans. Connective bundles formed a network of fairly independent tendons arranged in two layers. The tendinous bundles consisted essentially of type I collagen fibers while type III fibers were visible as a thin network with transversely and longitudinally oriented meshes around the muscle bundles. Cranial and caudal to the PMS were narrow and irregular bands of collagen fibers that apparently represented zones of low resistance to the high blood pressures acting from the left to the right heart chambers. The predominance of fiber bundles arranged in an approximately transverse direction with regard to the arterial cone axis suggests a resistance to enlargement resulting from high aortic blood pressure. Elastic fibers were observed in the transitional zone between the cardiac muscle and the PMS. They were continuous with elaunin fibers and these with oxytalan fibers closely intermingled with the narrow network of type I collagen fibers of the PMS. The successive transformation of elastic fibers, which were very numerous in the muscle-tendon transition, into elaunin and these into oxytalan fibers toward the central portions of the PMS suggests a functional sequence characterized by a high elasticity and consequent mobility of the transition region itself and by a progressive increase of resistance in this portion.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01628109
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    La partie membraneuse du septum cardiaque interventriculaire (1998)
    Springer
    Surgical and radiologic anatomy 20 (1998), S. 6-9 
    Details
    ISSN: 1279-8517
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01642244
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    Paper (German National Licenses)
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  • 4
    Electronic Resource
    Electronic Resource
    The structure of the bilaminar zone in the human temporomandibular joint: a light and scanning electron microscopy study in young and elderly subjects (2001)
    Oxford UK : Blackwell Science Ltd
    Journal of oral rehabilitation 28 (2001), S. 0 
    Details
    ISSN: 1365-2842
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: The bilaminar zone (BZ) in the human temporomandibular joint (TMJ) of toothed adults (GI) and toothless, elderly humans (GII) were analysed using light and scanning electron microscopy (SEM). In both groups the BZ consists of an upper and a lower stratum of connective tissue separated by a vascularized middle region. The superior stratum contains bundles of collagen fibres disposed in different directions. The fibres are fairly thick and transversely oriented immediately posterior to the TMJ disc. The initial part of the inferior stratum contains curved bundles of collagen fibres oriented anterio-posteriorly. From the middle to the posterior part of the inferior stratum, the fibres are right-aligned in GI and clearly sinuous in nature in GII. In both groups, the middle and posterior portions of the middle region are distinguished by the presence of vessels and vascular spaces. Loosely arranged connective and adipose tissues are also evident. The vascular spaces are wider in GII than in GI. The predominance of type I collagen fibres is clear in all regions of the BZ in both groups. The elastic fibres lie parallel to the collagen fibres in both groups and they are thicker and more abundant in GI, apparently decreasing in GII.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1046/j.1365-2842.2001.00683.x
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  • 5
    Electronic Resource
    Electronic Resource
    A microscopic survey of the human temporomandibular joint disc (1997)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of oral rehabilitation 24 (1997), S. 0 
    Details
    ISSN: 1365-2842
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: summary The articular disc of the temporomandibular joint was studied in a foetuses and children group (GI), a dentate group of adults (GII) and an edentulous, elderly group of humans (GIII) by light microscopy. The main, constituent bundles of type I collagen fibres are stratified and are orientated sagittally, transversely and obliquely in the middle portion of the disc. In the thick, posterior portion, transverse bundles constitute the main feature. In the anterior portion of the disc, the fibres are sagittally and obliquely orientated. Type III collagen fibres, intermingled with type I collagen fibres are present in all groups. The disc is cellular in nature in foetuses and children, becoming more fibrous with age. Chondroid cells are observed in all portions of the discs in groups GII and GIII. Elastic fibres are numerous in GI discs and decrease in number in the disc with age. These fibres lie parallel to the collagen fibres in all three portions of the three groups.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2842.1997.tb00283.x
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  • 6
    Electronic Resource
    Electronic Resource
    Structure and Ultrastructure of the Celiac–Mesenteric Ganglion Complex in the Domestic Dog (Canis familiaris) (2002)
    Berlin, Germany : Blackwell Verlag GmbH
    Anatomia, histologia, embryologia 31 (2002), S. 0 
    Details
    ISSN: 1439-0264
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: A number of neurons of the autonomic nervous system are situated in the ganglia and can be systematically divided into pre-vertebrals, paravertebrals, intramural and para-viscerals. The celiac–mesenteric ganglion, an important pre-vertebral ganglion, is located together with the abdominal aorta and links the central nervous system to the peripheral system, participating in the coordination of peripheral reflexes and principally innervating the stomach, intestines, accessory glands (liver and pancreas). In addition, the celiac–mesenteric ganglion also contributes to the innervation of the spleen and has a role in gastrointestinal motility control. This study examined the structural and ultrastructural aspects of 40 celiac–mesenteric ganglia from domestic dogs. For light microscopy ganglia were included in paraplast and stained with haematoxylin–eosin, picrosirius, toluidine blue, Calleja's and Masson's trichrome. For examination by electron microscopy, the ganglia were submitted to cryofracture, enzyme digestion, hydrolysis and fixed in 5% glutaraldehyde in 0.1 M phosphate buffer (pH 7.4). The celiac–mesenteric ganglion was observed as a ganglionic complex composed of various ganglionic units separated by types I and III collagen fibres, predominantly unmyelinated nerve fibres and continuous capillaries. This complex is surrounded by a double-layer capsule (internal and external). The principal ganglion cells had eccentric nuclei with two nucleoli, the nucleolemma was double and presented nuclear pores. In the cytoplasm there were vesicles of the Golgi apparatus, electron-dense vacuoles, mitochondrias, smooth and granulated endoplasmic reticulum and free ribosomes. In conclusion, this ganglionic complex, in contrast to similar structures in the enteric nervous system, presents separate ganglionic units in a systematic arrangement related to the extrinsic and specific innervation of the target organs.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1046/j.1439-0264.2002.00415.x
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  • 7
    Electronic Resource
    Electronic Resource
    Light and electron microscopy of the human hepato-duodenal ligament: A morpho functional study (1995)
    New York, NY [u.a.] : Wiley-Blackwell
    Clinical Anatomy 8 (1995), S. 102-109 
    Details
    ISSN: 0897-3806
    Keywords: collagen fibers ; elastic-elastic-related fibers ; omentun minus ; mesoscopy ; first duodenal sphincter ; Life and Medical Sciences ; Miscellaneous Medical
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Medicine
    Notes: The morpho-functional relationships between the hepato-duodenal ligament and the superior part of the duodenum are analysed. Twenty-four specimens were removed during necropsies of adults and prepared according to various mesoscopic, microscopic, and ultramicroscopical methods, i. e., whole-mounts, membrane preparations, thick and thin histological sections, and polarized light, scanning, and transmission electron microscopy were employed.The hepato-duodenal ligament is formed by longitudinally elongated, type I collagen fiber bundles which are interlinked by more delicate bundles of type III collagen fibers. Longitudinally disposed elastic fibers are the principal component of the elastic fiber system of the ligament. These are in continuity with the elaunin and oxytalan fibers which are intermingled with the muscle cells of the vessels and duodenal wall, and fat cells of the ligament.Part of the muscle bundles of the external, longitudinal, muscle layer of the Cluodenum is anchored in the adventitial and subserosal collagen and elastic fiber framework of the organ while part inserts directly into the fibrous framework of the ligament. The fibrous system of the ligament is continuous with that of the subserosa and adventitia of the duodenum. © 1995 WiIey-Liss, Inc.
    Additional Material: 20 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/ca.980080204
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