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Download e-book for kindle: Atlas of the Ear: By Scanning Electron Microscopy by Yasuo Harada

By Yasuo Harada

The body structure of the semicircular canals was once my major study curiosity sooner than i started to review their morphology. In 1966, through the use of the remoted semicircular canal of the frog, i used to be capable of exhibit that mobilephone task within the horizontal semicircular canal has the other polarity to that during the vertical canals, which was once the 1st physiological facts of Ewald's legislation. a number of transmitting electron microscope (TEM) reports had already mentioned at the morphology of the semicircular canal cristae; notwithstanding, my morphological paintings was once prompted by way of a robust wish to see no matter if the morphological polarity accorded to the physio­ logical polarity. In 1968 I occurred to determine the paper written via Dr David Lim, one among my shut acquaintances. His findings about the vestibular morphology, while tested by means of scanning electron microscopy (SEM), involved me greatly a result of three-d caliber of the micro­ graphs. This encouraged me to get involved in vestibular morphol­ ogy. at the beginning, although, I confronted many issues of specimen guidance for SEM, and the 1st few years have been spent easily fixing technical difficulties, specially these of artifacts. a number of the figures during this e-book were photographed with a JEOL JSM U-3 scanning electron microscope over a decade. The sharpness of those photos nonetheless, i believe, bears comparability to the defi­ nition of these taken by means of the extra refined SEM scopes at the moment available.

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1975). Scanning electron microscopic studies on the morphological relation of vestibular sensory hair bundles to cupula and otolithic membrane. Minerva Otorhinolaryngologica, 25, 86 3. Igarashi, M. and Kanda. T. (1969). Fine structure of the otolithic membrane in squirrel monkey. Acta Otolaryngol. (Stockholm), 68, 43 4. Johnsson, L. G. and Hawkins, J. E. (1967). Otolithic membrane of the saccule and utricle in man. Science, 157, 1454 5. Lim, D. J. (1971). Vestibular sensory organs. Arch. , 94, 69 48 6.

Ann. , 60, 974 11. Wittmaak, K. (1956). Die Ortho und Pathoviologie des Labyrinthes. (Stuttgart: Georg Thieme) 49 b Figure 32 Figure 33 High magnification of Figure 32A (x 30000) Figure 32 Saccular otolithic membrane (frog). (a) Surface of the otolithic membrane. Numerous small holes are found. (x 300), (b) Sensory cilia are embedded in the hole of otolithic membrane (x 1500) 51 Figure 34 Otolithic membrane and the sensory cilia (pigeon). Some sensory cilia are embedded in the small holes of the otolithic membrane.

N: nucleus (x 8400). (b) Nucleus of the ciliated cell. Mi: mitochondrion (x 8400). (c) Cracked goblet cell. Cell body at an active phase is extended and many secretory granules are seen ( x 8400). (d) Inactive goblet cell (G) is seen between the ciliated cells (C). Basal cells (B) are either triangular or square with large nucleus (N). Usually basal cells form three or four layers on the basement membrane (x 2500). (e) Submucosal collagenous fibres. Fibres run along the long axis of the Eustachian tube (x 5000) a b c d e Figure 18 a b c d e r Eustachian tube of the rabbit.

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