Hiromitsu Ezure

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We analysed the sizes of nerve fibres in the human femoral nerve which innervates the quadriceps femoris muscles. The material was taken from 14 cadavers aged from 61 to 97 years. A linear regression analysis disclosed a significant age-related decrease of the mean transverse area of axons. Such decrease with age may be an indication of motoneuron atrophy.(More)
We examined cross-sectional areas of Meissner's corpuscles to evaluate the changes in their morphology and density that occur during the aging process. Our study of 10 tissue specimens from the right index finger pulp of 10 males, showed that both the size and the number of Meissner's corpuscles decrease with age. We claim greater accuracy in our data(More)
The aim of this research is to find and to evaluate morphometorically the unmyelinated nerve fibers in the human mandibular nerve using a light microscope. Our report demonstrates for the first time the presence of the unmyelinated nerve fibers of the human mandibular nerve stained by a special method. Our results also indicate that there is a morphometric(More)
We studied the nerve fibers of the human mandibular nerve using edentulous jaw cadavers. We made nitrocellulose sections and stained them with Goto's modification of Masson-Goldner's method in order to evaluate the nerve fibers using an image-analyzer. The results showed an unusual feature: a sudden increase of axonal areas during the decade of the 80s(More)
We evaluated the components of nerve fibers of the motor and sensory roots of the trigeminal nerve by morphometric analysis. Trigeminal nerves were obtained from 5 cadavers (males, aged 67-95) were stained by Masson-Goldner-Goto method and examined under the microscope using a morphometric image-analyzer. The area and perimeter of axons were larger in the(More)
The development of the human gracilis nucleus was studied on serial sections of the brain of 9 fetuses and neonates at 18-40 weeks of gestation, a two-month-old infant and a 63-year-old adult using a microscope with a drawing tube and an image-analyzing computer system. A morphometric evaluation revealed that the human gracilis nucleus, whose neurons were(More)
In a study of Japanese adults, we found that the orbital branch (OB) passing through the superior orbital fissure frequently anastomosed with the lacrimal artery or the ophthalmic artery (12/20). However, the OB passing through the meningo-orbital foramen (mof) only associationaly anastomosed with branches of the ophthalmic artery (4/79). Furthermore, the(More)
In the masticatory muscles, the development of bundles of the tendon was examined: they were composed of many collagen fibers and a few elastic fibers. In the masseter muscle, the property of the tendon differs in the distribution and size of collagen fibers and elastic fibers in comparison with those of other masticatory muscles. This difference is(More)
We measured the cross-sectional area (CSA) of the human tractus solitarius (HTS) with the help of an image-analyzer system on a cross section of the upper part of the medulla oblongata in 44 Japanese cadavers (22 males and 22 females) and examined the relationship between age, sex and whether the subjects were dentulous or edentulous. The results showed no(More)
We found a morphological similarity in the distribution of vascular lesions in five hanging suicide brains. The overall findings on the lesions remind us of the venous origin but not of the arterial origin of the blood supply. Morphometric evaluations did not reveal any valuable conclusion. The results of this pathological research may be of clinical(More)