Der Plexus cochlearis

Balogh, Károly; Koburg, E.

doi:10.1007/bf02148945

Cited by 33 publications

(2 citation statements)

References 10 publications

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“…Smith (1954Smith ( , 1973, and by the present author (1968); hence they need not be reviewed here. The course of the branches supplying the cochlea, and the capillary networks into which they break up, have also been traced by these authors and by Axelsson (1968), among others, Within the modiolus are to be found the cochlear plexus of Balogh and Koburg (1965), the significance of which is still to be determined, and the thin-walled "glomeruli" of Schwalbe (1887), vessels which Kimura and Ota (1974) have shown to be fenestrated like those of the renal glomeruli. At intervals, branches arise from the spiral modiolar artery, which immediately divide to supply a) the structures of the lateral wall, anb b) the structures of the spiral lamina and the spiral ganglion.…”

Section: Special Featt:res Of the Labyrinthine Circulationmentioning

confidence: 88%

Microcirculation in the labyrinth

Hawkins

1976

Arch Otorhinolaryngol

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The inner ear is unique in the number and variety of specialized microvascular networks that furnish blood to its parts. Four distinct capillary networks arranged in parallel supply the structures of the outer wall, and four others those of the spiral lamina. Most of the capillaries are surrounded by pericapillary spaces favoring filtration and reabsorption of fluid. In the guinea pig those of the spiral prominence and outer sulcus show a special pericapillary tissue. The strial capillaries are larger in diameter and are closely invested by strial cells. The blood within them has a higher hematocrit and flows more slowly than elsewhere in the labyrinth. The arcades of the tympanic lip and basilar membrane receive occasional innervation by fine unmyelinated nerve fibers. A possible role of prostaglandins in controlling the tone of the cochlear microvasculature is suggested. Although it appears unlikely that vascular lesions within the labyrinth could be responsible for the hydrops of Menière's syndrome, devascularization and atrophy of the endolymphatic sac might be contributory factors.

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Section: Special Featt:res Of the Labyrinthine Circulationmentioning

confidence: 88%

Microcirculation in the labyrinth

Hawkins

1976

Arch Otorhinolaryngol

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“…Such pulses could negatively influence the sensitive mechanoreceptors and hearing. Furthermore, Balogh and Koburg ( 50 ) described a ‘plexus cochlearis’ in the modiolus with very high metabolic turnover rates, even higher than those of the spiral ganglion. This resembled the choroid plexus with extending spider-web-like connective tissue processes, and they speculated on a secretory function.…”

Section: Discussionmentioning

confidence: 99%

Human inner ear blood supply revisited: the Uppsala collection of temporal bone—an international resource of education and collaboration

Mei

Atturo

Wadin

et al. 2018

Upsala Journal of Medical Sciences

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Background: The Uppsala collection of human temporal bones and molds is a unique resource for education and international research collaboration. Micro-computerized tomography (micro-CT) and synchrotron imaging are used to investigate the complex anatomy of the inner ear. Impaired microcirculation is etiologically linked to various inner ear disorders, and recent developments in inner ear surgery promote examination of the vascular system. Here, for the first time, we present three-dimensional (3D) data from investigations of the major vascular pathways and corresponding bone channels.Methods: We used the archival Uppsala collection of temporal bones and molds consisting of 324 inner ear casts and 113 macerated temporal bones. Micro-CT was used to investigate vascular bone channels, and 26 fresh human temporal bones underwent synchrotron radiation phase contrast imaging (SR-PCI). Data were processed by volume-rendering software to create 3D reconstructions allowing orthogonal sectioning, cropping, and soft tissue analyses.Results: Micro-CT with 3D rendering was superior in reproducing the anatomy of the vascular bone channels, while SR-PCI replicated soft tissues. Arterial bone channels were traced from scala vestibuli (SV) arterioles to the fundus, cochlea, and vestibular apparatus. Drainage routes along the aqueducts were examined.Conclusion: Human inner ear vessels are difficult to study due to the adjoining hard bone. Micro-CT and SR-PCI with 3D reconstructions revealed large portions of the micro-vascular system in un-decalcified specimens. The results increase our understanding of the organization of the vascular system in humans and how altered microcirculation may relate to inner ear disorders. The findings may also have surgical implications.

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